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[Git][ghc/ghc][wip/marge_bot_batch_merge_job] 5 commits: Add type families: Tuple, Constraints, Tuple#, Sum#
by Marge Bot (＠marge-bot) 17 May '26

17 May '26

Marge Bot pushed to branch wip/marge_bot_batch_merge_job at Glasgow Haskell Compiler / GHC Commits: 57d67da7 by Vladislav Zavialov at 2026-05-17T12:18:14-04:00 Add type families: Tuple, Constraints, Tuple#, Sum# These type families map tuples of types to the corresponding Tuple<N>, Tuple<N>#, CTuple<N>, and Sum<N># types. Some examples at N=2: Tuple (Int, Bool) = Tuple2 Int Bool Constraints (Show a, Eq a) = CTuple2 (Show a) (Eq a) Tuple# (Int#, Float#) = Tuple2# Int# Float# Sum# (Int#, Float#) = Sum2# Int# Float# See GHC Proposal #145 "Non-punning list and tuple syntax". To make the Sum# instance at N=64 possible, this patch also introduces the Sum64# constructor declaration and bumps mAX_SUM_SIZE from 63 to 64. Metric Increase: ghc_experimental_dir - - - - - 167d6b61 by fendor at 2026-05-17T12:18:15-04:00 Fix regression T27202: `:load` and `:add` work in GHCi To fix the regression there are conceptually two major things that we fix: * We don't remove the `importDirs` from `interactive-session` * When `:add`ing a module, we don't try to find them via PackageImports * The PackageImport is wrong as we can't know the package-name at this stage in ghc/UI.hs What does it mean to not remove the `importDirs` from `interactive-session`? It means that, given some initial `DynFlags`, we will use those `importDirs` in `interactive-session`. The initial `DynFlags`, however, depend on how you initialise the GHC session. For a simple session, initialised by ghc -isrc -this-unit-id main It is simple, just use the `DynFlags` given on the cli. Thus, `main` and `interactive-session` will have the same `DynFlags`, except for the `homeUnitId` and `interactive-session` depends on `main` by construction of the GHCi session. What about a multiple home unit session, though? ghc -unit @unit1 -unit @unit2 What are the `DynFlags` in this cli invocation? It shouldn't be either `@unti1` nor `@unit2`, as the order shouldn't matter or any other implicit condition. For consistency, we decide that the initial `DynFlags` are the top `DynFlags` on the cli, ignoring `-unit` flags. Thus, in this example, there are no `importsDirs` regardless of what we might find in `@unit1` and `@unit2`. But in this invocation: ghc -isrc -unit @unit1 -unit @unit2 The `interactive-session` will have the `importsDirs` `src`. Note, `-isrc` will be inherited in `@unit1` and `@unit2`, so you need to explicitly use `-i` to clear the `importsDirs`, in order to avoid accidentally adding `src` as an import directory to all other home units. This fix has been made possible by the improvements introduced in !15888, which avoids ambiguity when a home unit shares the `importsDirs` with the `interactive-session`, on top of being much faster for multiple home units. Adds regression tests for T27202 for `:load`ing and `:add`ing modules that are located in import directories. - - - - - 148200ba by fendor at 2026-05-17T12:18:15-04:00 Use home unit package db stacks in GHCi prompt and session unit In order to import modules from home unit dependencies (e.g., `Data.Map`), the ghci prompt unit needs to populate its `UnitState`. This is tricky to handle correctly, which `PackageDBFlag`s should we use to populate the `UnitState`? We decide, the most intuitive solution for users is to depend on all `PackageDBFlag`s, so that any dependency can be imported in GHCi. This assumes consistency in the `PackageDBFlag`s, so no two home units specify `PackageDBFlag`s that are inconsistent with each other. We could simply concat all the `PackageDBFlag`s of the existing home units, but later `PackageDBFlag`s shadow earlier ones, leading to the last processed home units' `PackageDBFlag`s to shadow the earlier ones. This is hard to fix, we need to give users the capability to provide ghc options for the ghci prompt home unit. However, as this is considerably more work, we decided on an approximation that should work out most of the time. Package Db stacks in cabal and stack follow a certain structure: -no-user-package-db > -package-db $cabal-store > -package-db $local-db The first two arguments are always the same, namely the `-no-user-package-db` and `-package-db`. We compute the longest common prefix over all home units, and use that as the start of the package db stack. Then, over the rest of the `PackageDBFlag`s, we simply take the union and append them to our initial stack. We assume, that the rest of package dbs only defines very few, "local" units that are usually not shadowing each other. This allows us to get a relatively consistent package database stack for the ghci prompt home unit. Similar reasoning applies to the session unit in order to add modules to the session and have dependencies available in the module. We do something similar for `-package` flags, to make sure only the correct units are actually visible in the ghci session. This time, we simply take the union of all `PackageFlag`s, allowing us to import modules from the home unit dependencies. In the future, it would be beneficial to allow the user to provide the exact ghc options to control the visibilities. For now, this will have to do. - - - - - 8bacb9e0 by Duncan Coutts at 2026-05-17T12:18:16-04:00 Document removal of the signal-based interval timer Update mentions within the RTS section of the users guide. Add a changelog entry. - - - - - 65dccb9f by Duncan Coutts at 2026-05-17T12:18:16-04:00 Fix section for an recent changelog entry - - - - - 93 changed files: - + changelog.d/T27202 - changelog.d/dynamic-trace-flags - + changelog.d/lib-add-tuple-tyfam-27179 - + changelog.d/no-more-timer-signal - compiler/GHC/Driver/DynFlags.hs - compiler/GHC/Settings/Constants.hs - compiler/GHC/Unit/State.hs - docs/users_guide/profiling.rst - docs/users_guide/runtime_control.rst - ghc/GHCi/UI.hs - ghc/Main.hs - libraries/base/src/GHC/Base.hs - libraries/base/src/GHC/Exts.hs - libraries/ghc-experimental/src/Data/Sum/Experimental.hs - libraries/ghc-experimental/src/Data/Tuple/Experimental.hs - libraries/ghc-internal/src/GHC/Internal/Base.hs - libraries/ghc-internal/src/GHC/Internal/Exts.hs - libraries/ghc-internal/src/GHC/Internal/Types.hs - testsuite/tests/driver/fat-iface/fat014.stdout - + testsuite/tests/ghci/prog-mhu006/Makefile - + testsuite/tests/ghci/prog-mhu006/a/A.hs - + testsuite/tests/ghci/prog-mhu006/all.T - + testsuite/tests/ghci/prog-mhu006/b/B.hs - + testsuite/tests/ghci/prog-mhu006/prog-mhu006a.script - + testsuite/tests/ghci/prog-mhu006/prog-mhu006a.stdout - + testsuite/tests/ghci/prog-mhu006/unitA - + testsuite/tests/ghci/prog-mhu006/unitB - testsuite/tests/ghci/prog018/prog018.stdout - testsuite/tests/ghci/prog020/Makefile - testsuite/tests/ghci/prog020/all.T - testsuite/tests/ghci/prog020/ghci.prog020.script → testsuite/tests/ghci/prog020/ghci.prog020a.script - testsuite/tests/ghci/prog020/ghci.prog020.stderr → testsuite/tests/ghci/prog020/ghci.prog020a.stderr - testsuite/tests/ghci/prog020/ghci.prog020.stdout → testsuite/tests/ghci/prog020/ghci.prog020a.stdout - + testsuite/tests/ghci/prog020/ghci.prog020b.script - + testsuite/tests/ghci/prog020/ghci.prog020b.stderr - + testsuite/tests/ghci/prog020/ghci.prog020b.stdout - + testsuite/tests/ghci/prog023/Makefile - + testsuite/tests/ghci/prog023/all.T - + testsuite/tests/ghci/prog023/prog023a.script - + testsuite/tests/ghci/prog023/prog023a.stdout - + testsuite/tests/ghci/prog023/prog023b.script - + testsuite/tests/ghci/prog023/prog023b.stdout - + testsuite/tests/ghci/prog023/src/A.hs - + testsuite/tests/ghci/prog024/Makefile - + testsuite/tests/ghci/prog024/all.T - + testsuite/tests/ghci/prog024/prog024a.script - + testsuite/tests/ghci/prog024/prog024a.stdout - + testsuite/tests/ghci/prog024/prog024b.script - + testsuite/tests/ghci/prog024/prog024b.stdout - + testsuite/tests/ghci/prog024/prog024c.script - + testsuite/tests/ghci/prog024/prog024c.stderr - + testsuite/tests/ghci/prog024/prog024c.stdout - + testsuite/tests/ghci/prog024/prog024d.script - + testsuite/tests/ghci/prog024/prog024d.stderr - + testsuite/tests/ghci/prog024/prog024d.stdout - + testsuite/tests/ghci/prog024/prog024e.script - + testsuite/tests/ghci/prog024/prog024e.stdout - + testsuite/tests/ghci/prog024/prog024f.script - + testsuite/tests/ghci/prog024/prog024f.stdout - + testsuite/tests/ghci/prog024/src/A.hs - + testsuite/tests/ghci/prog024/src/B.hs - + testsuite/tests/ghci/prog025/Makefile - + testsuite/tests/ghci/prog025/a/A.hs - + testsuite/tests/ghci/prog025/all.T - + testsuite/tests/ghci/prog025/prog025a.script - + testsuite/tests/ghci/prog025/prog025a.stdout - + testsuite/tests/ghci/prog025/prog025b.script - + testsuite/tests/ghci/prog025/prog025b.stdout - + testsuite/tests/ghci/prog025/testpkg/Test.hs - + testsuite/tests/ghci/prog025/testpkg/testpkg-0.1.0.0.pkg - + testsuite/tests/ghci/prog025/testpkg/testpkg-0.2.0.0.pkg - + testsuite/tests/ghci/prog025/unitA - testsuite/tests/ghci/scripts/ListTuplePunsPprNoAbbrevTuple.stdout - testsuite/tests/ghci/scripts/T13997.stdout - testsuite/tests/ghci/scripts/T1914.stdout - testsuite/tests/ghci/scripts/T20217.stdout - testsuite/tests/ghci/scripts/T8042.stdout - testsuite/tests/ghci/scripts/T8042recomp.stdout - testsuite/tests/ghci/scripts/all.T - testsuite/tests/ghci/should_run/T10920.stderr - testsuite/tests/interface-stability/ghc-experimental-exports.stdout - testsuite/tests/interface-stability/ghc-experimental-exports.stdout-mingw32 - testsuite/tests/interface-stability/ghc-prim-exports.stdout - testsuite/tests/interface-stability/ghc-prim-exports.stdout-mingw32 - testsuite/tests/parser/should_compile/ListTuplePunsSuccess1.hs - testsuite/tests/parser/should_compile/all.T - + testsuite/tests/parser/should_fail/ListTuplePunsFail6.hs - + testsuite/tests/parser/should_fail/ListTuplePunsFail6.stderr - testsuite/tests/parser/should_fail/all.T - testsuite/tests/parser/should_run/ListTuplePunsConstraints.hs - testsuite/tests/profiling/should_run/callstack001.stdout - + testsuite/tests/typecheck/should_compile/T23135.hs - testsuite/tests/typecheck/should_compile/all.T The diff was not included because it is too large. View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/3ebc840e27a28078e16e9074bb6f4f… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/3ebc840e27a28078e16e9074bb6f4f… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/wenkokke/trace-ipe] 3 commits: testsuite: Add test for TraceFlags.traceIpe
by Wen Kokke (＠wenkokke) 17 May '26

17 May '26

Wen Kokke pushed to branch wip/wenkokke/trace-ipe at Glasgow Haskell Compiler / GHC Commits: 1973f657 by Wen Kokke at 2026-05-17T16:52:04+01:00 testsuite: Add test for TraceFlags.traceIpe - - - - - d43aa05a by Wen Kokke at 2026-05-17T16:52:07+01:00 ghc-internal: Add DebugFlags.ipe - - - - - 26db7027 by Wen Kokke at 2026-05-17T16:52:08+01:00 testsuite: Add test for DebugFlags.ipe - - - - - 10 changed files: - libraries/ghc-internal/src/GHC/Internal/RTS/Flags.hsc - testsuite/tests/interface-stability/ghc-experimental-exports.stdout - testsuite/tests/interface-stability/ghc-experimental-exports.stdout-mingw32 - + testsuite/tests/rts/T25275/DebugIpe.hs - + testsuite/tests/rts/T25275/T25275_A.stdout - + testsuite/tests/rts/T25275/T25275_B.stdout - + testsuite/tests/rts/T25275/T25275_C.stdout - + testsuite/tests/rts/T25275/T25275_D.stdout - + testsuite/tests/rts/T25275/TraceIpe.hs - + testsuite/tests/rts/T25275/all.T Changes: ===================================== libraries/ghc-internal/src/GHC/Internal/RTS/Flags.hsc ===================================== @@ -211,6 +211,8 @@ data DebugFlags = DebugFlags , squeeze :: Bool -- ^ @z@ stack squeezing & lazy blackholing , hpc :: Bool -- ^ @c@ coverage , sparks :: Bool -- ^ @r@ + , ipe :: Bool -- ^ @I@ + -- @since ghc-experimental-10.0.0 } deriving ( Show -- ^ @since base-4.8.0.0 , Generic -- ^ @since base-4.15.0.0 ) @@ -590,6 +592,8 @@ getDebugFlags = do (#{peek DEBUG_FLAGS, hpc} ptr :: IO CBool)) <*> (toBool <$> (#{peek DEBUG_FLAGS, sparks} ptr :: IO CBool)) + <*> (toBool <$> + (#{peek DEBUG_FLAGS, ipe} ptr :: IO CBool)) getCCFlags :: IO CCFlags getCCFlags = do ===================================== testsuite/tests/interface-stability/ghc-experimental-exports.stdout ===================================== @@ -6428,7 +6428,7 @@ module GHC.RTS.Flags.Experimental where type ConcFlags :: * data ConcFlags = ConcFlags {ctxtSwitchTime :: RtsTime, ctxtSwitchTicks :: GHC.Internal.Types.Int} type DebugFlags :: * - data DebugFlags = DebugFlags {scheduler :: GHC.Internal.Types.Bool, interpreter :: GHC.Internal.Types.Bool, weak :: GHC.Internal.Types.Bool, gccafs :: GHC.Internal.Types.Bool, gc :: GHC.Internal.Types.Bool, nonmoving_gc :: GHC.Internal.Types.Bool, block_alloc :: GHC.Internal.Types.Bool, sanity :: GHC.Internal.Types.Bool, stable :: GHC.Internal.Types.Bool, prof :: GHC.Internal.Types.Bool, linker :: GHC.Internal.Types.Bool, apply :: GHC.Internal.Types.Bool, stm :: GHC.Internal.Types.Bool, squeeze :: GHC.Internal.Types.Bool, hpc :: GHC.Internal.Types.Bool, sparks :: GHC.Internal.Types.Bool} + data DebugFlags = DebugFlags {scheduler :: GHC.Internal.Types.Bool, interpreter :: GHC.Internal.Types.Bool, weak :: GHC.Internal.Types.Bool, gccafs :: GHC.Internal.Types.Bool, gc :: GHC.Internal.Types.Bool, nonmoving_gc :: GHC.Internal.Types.Bool, block_alloc :: GHC.Internal.Types.Bool, sanity :: GHC.Internal.Types.Bool, stable :: GHC.Internal.Types.Bool, prof :: GHC.Internal.Types.Bool, linker :: GHC.Internal.Types.Bool, apply :: GHC.Internal.Types.Bool, stm :: GHC.Internal.Types.Bool, squeeze :: GHC.Internal.Types.Bool, hpc :: GHC.Internal.Types.Bool, sparks :: GHC.Internal.Types.Bool, ipe :: GHC.Internal.Types.Bool} type DoCostCentres :: * data DoCostCentres = CostCentresNone | CostCentresSummary | CostCentresVerbose | CostCentresAll | CostCentresJSON type DoHeapProfile :: * ===================================== testsuite/tests/interface-stability/ghc-experimental-exports.stdout-mingw32 ===================================== @@ -6431,7 +6431,7 @@ module GHC.RTS.Flags.Experimental where type ConcFlags :: * data ConcFlags = ConcFlags {ctxtSwitchTime :: RtsTime, ctxtSwitchTicks :: GHC.Internal.Types.Int} type DebugFlags :: * - data DebugFlags = DebugFlags {scheduler :: GHC.Internal.Types.Bool, interpreter :: GHC.Internal.Types.Bool, weak :: GHC.Internal.Types.Bool, gccafs :: GHC.Internal.Types.Bool, gc :: GHC.Internal.Types.Bool, nonmoving_gc :: GHC.Internal.Types.Bool, block_alloc :: GHC.Internal.Types.Bool, sanity :: GHC.Internal.Types.Bool, stable :: GHC.Internal.Types.Bool, prof :: GHC.Internal.Types.Bool, linker :: GHC.Internal.Types.Bool, apply :: GHC.Internal.Types.Bool, stm :: GHC.Internal.Types.Bool, squeeze :: GHC.Internal.Types.Bool, hpc :: GHC.Internal.Types.Bool, sparks :: GHC.Internal.Types.Bool} + data DebugFlags = DebugFlags {scheduler :: GHC.Internal.Types.Bool, interpreter :: GHC.Internal.Types.Bool, weak :: GHC.Internal.Types.Bool, gccafs :: GHC.Internal.Types.Bool, gc :: GHC.Internal.Types.Bool, nonmoving_gc :: GHC.Internal.Types.Bool, block_alloc :: GHC.Internal.Types.Bool, sanity :: GHC.Internal.Types.Bool, stable :: GHC.Internal.Types.Bool, prof :: GHC.Internal.Types.Bool, linker :: GHC.Internal.Types.Bool, apply :: GHC.Internal.Types.Bool, stm :: GHC.Internal.Types.Bool, squeeze :: GHC.Internal.Types.Bool, hpc :: GHC.Internal.Types.Bool, sparks :: GHC.Internal.Types.Bool, ipe :: GHC.Internal.Types.Bool} type DoCostCentres :: * data DoCostCentres = CostCentresNone | CostCentresSummary | CostCentresVerbose | CostCentresAll | CostCentresJSON type DoHeapProfile :: * ===================================== testsuite/tests/rts/T25275/DebugIpe.hs ===================================== @@ -0,0 +1,6 @@ +module Main where + +import GHC.RTS.Flags.Experimental (DebugFlags (..), getDebugFlags) + +main :: IO () +main = print . ipe =<< getDebugFlags ===================================== testsuite/tests/rts/T25275/T25275_A.stdout ===================================== @@ -0,0 +1 @@ +False \ No newline at end of file ===================================== testsuite/tests/rts/T25275/T25275_B.stdout ===================================== @@ -0,0 +1 @@ +True \ No newline at end of file ===================================== testsuite/tests/rts/T25275/T25275_C.stdout ===================================== @@ -0,0 +1 @@ +False \ No newline at end of file ===================================== testsuite/tests/rts/T25275/T25275_D.stdout ===================================== @@ -0,0 +1 @@ +True \ No newline at end of file ===================================== testsuite/tests/rts/T25275/TraceIpe.hs ===================================== @@ -0,0 +1,6 @@ +module Main where + +import GHC.RTS.Flags.Experimental (TraceFlags (..), getTraceFlags) + +main :: IO () +main = print . traceIpe =<< getTraceFlags ===================================== testsuite/tests/rts/T25275/all.T ===================================== @@ -0,0 +1,45 @@ +# Compile and run with default RTS options +test( + 'T25275_A', + [ + extra_files(['TraceIpe.hs']), + js_skip + ], + multimod_compile_and_run, + ['TraceIpe', ''], +) + +# Compile and run with -lI +test( + 'T25275_B', + [ + extra_files(['TraceIpe.hs']), + extra_run_opts('+RTS -lI -RTS'), + js_skip + ], + multimod_compile_and_run, + ['TraceIpe', ''], +) + +# Compile and run with default RTS options +test( + 'T25275_C', + [ + only_ways(['debug']), + extra_files(['DebugIpe.hs']), + ], + multimod_compile_and_run, + ['DebugIpe', ''], +) + +# Compile and run with -DI +test( + 'T25275_D', + [ + only_ways(['debug']), + extra_files(['DebugIpe.hs']), + extra_run_opts('+RTS -DI -RTS'), + ], + multimod_compile_and_run, + ['DebugIpe', ''], +) View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/166400be280908d2a78752004ea454… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/166400be280908d2a78752004ea454… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/T26989] Major refactor of the Simplifier
by Simon Peyton Jones (＠simonpj) 17 May '26

17 May '26

Simon Peyton Jones pushed to branch wip/T26989 at Glasgow Haskell Compiler / GHC Commits: 51e0a77c by Simon Peyton Jones at 2026-05-17T15:56:55+01:00 Major refactor of the Simplifier The main payload of this patch is to refactor the Simplifer to avoid repeated simplification when using Plan (AFTER) for rule rewrites. The need for this was shown up by #26989. See Note [Avoid repeated simplification] in GHC.Core.Opt.Simplify.Iteration. Related refactoring: * Refactor the two fields `sc_dup` and `sc_env` in `ApplyToVal` into one, `sc_env`. Reason: the envt is irrelevant in the "simplified" case, so the data type describes the possiblitiies much more accurately now. * Some refactoring in `knownCon` to split off `wrapDataConFloats`. * Refactor `lookupRule` and its auxiliary functions to return `RuleMatch`, a new data type. See Note [data RuleMatch] in GHC.Core. Ditto for BuiltinRule. This RuleMatch returns fragments of the target in rm_args and rm_floats, leaving `rm_rhs` to be the stuff from the RULE itself. Doing this has routine consequences in GHC.Core.Opt.ConstantFold. Many changes there but all routine. * When doing occurrence analysis on RULEs, make the occ-info on the rule binders relate just to the RHS, not the LHS. See (OUR1) in Note Note [OccInfo in unfoldings and rules] This means that Lint must not complain about the fact that the patterns in the RULE mentions binders that are marked dead. See Note [Dead occurrences] in GHC.Core.Lint. I changed the Core pretty-printer so that it didn't suppress dead binders, else I can't see those binders in RULEs. That led to quite a lot of testsuite wibbles. * Refactor FloatBinds, so that it is used both by `exprIsConApp_mabye` and by `lookupRule` * Move the definition of FloatBinds out of GHc.Core.Make, into GHC.Core. * Add FloatTick as an extra constructor. * Refactor `lookupRule` to use `FloatBinds` instead of `BindWrapper`. This refactor just shares more code. (Rename GHC.Core.Opt.FloatOut.FloatBinds to FloatLets, to avoid gratuitious name clash with GHC.Core.FloatBinds.) Corecion optimisation * In simpleOpt, when composing coercions, call new function `optTransCo`. This is much lighter weight than full blown coercion optimisation. * Make `GHC.Core.Opt.Arity.pushCoValArg` and `pushCoTyArg` return the coercionLKind of the coercion. This saves recomputing that coercionLKind at the key call sites in GHC.Core.Opt.Simplify.Iteration.pushCast. * Rename `addCoerce` in GHC.Core.Simplify.Iteration to become `pushCast`. * In the `ApplyToVal` case of `pushCast` we had a very unsavoury call to `simplArg`. I eliminated it by adding a field `sc_cast` to `ApplyToVal` that records any pending casts. Much nicer now. See Note [The sc_cast field of ApplyToVal]. * Don't optimise coercions if the type-substitution is empty. See Note [Optimising coercions] in GHC.Core.Opt.Simplify.Iteration. The fix for #26838 is dramatic. For the test in perf/compiler/T26839 we have Compiler allocs: Before: 7,363M After: 688M Compile time goes down generally. Here are compiler-alloc changes over 0.5%: CoOpt_Read(normal) 729,184,920 -0.7% CoOpt_Singletons(normal) 666,916,960 -4.6% GOOD LargeRecord(normal) 1,227,056,876 +1.1% T12227(normal) 256,827,604 -4.6% GOOD T12425(optasm) 76,879,410 -0.8% T12545(normal) 787,826,918 -10.8% GOOD T12707(normal) 775,186,464 -0.9% T13253(normal) 318,599,596 -0.8% T14766(normal) 685,857,320 -1.0% T15304(normal) 1,123,333,422 -2.2% T15630(normal) 123,142,330 -2.6% T15630a(normal) 123,092,100 -2.6% T15703(normal) 299,751,682 -2.9% GOOD T17516(normal) 964,072,280 +1.0% T18223(normal) 367,016,820 -6.2% GOOD T18730(optasm) 130,643,770 -3.3% GOOD T20261(normal) 535,608,584 -0.7% T21839c(normal) 340,340,436 -0.9% T24984(normal) 85,568,392 -1.9% T3064(normal) 174,631,992 -1.2% T3294(normal) 1,215,886,432 -0.7% T5030(normal) 141,449,704 -17.2% GOOD T5321Fun(normal) 258,484,744 -1.9% T8095(normal) 770,532,232 -2.7% T9630(normal) 858,423,408 -14.5% GOOD T9872c(normal) 1,591,709,448 +0.7% info_table_map_perf(normal) 19,700,614,458 -1.3% geo. mean -0.7% minimum -17.2% maximum +1.1% However, strangely there seems to be a 5.0% increase in CoOpt_Read in the x86_64-linux-fedora43-validate+debug_info+ubsan job, although there generally a /decrease/ in this test in other builds. The baseline value looks strange. Anyway I'll just accept it. Metric Decrease: CoOpt_Singletons T12227 T12545 T15703 T18223 T18730 T21839c T5030 T9630 Metric Increase: CoOpt_Read - - - - - 55 changed files: - compiler/GHC/Core.hs - compiler/GHC/Core/Coercion.hs - compiler/GHC/Core/Coercion/Opt.hs - compiler/GHC/Core/Lint.hs - compiler/GHC/Core/Make.hs - compiler/GHC/Core/Opt/Arity.hs - compiler/GHC/Core/Opt/ConstantFold.hs - compiler/GHC/Core/Opt/FloatIn.hs - compiler/GHC/Core/Opt/FloatOut.hs - compiler/GHC/Core/Opt/OccurAnal.hs - compiler/GHC/Core/Opt/Simplify/Env.hs - compiler/GHC/Core/Opt/Simplify/Iteration.hs - compiler/GHC/Core/Opt/Simplify/Utils.hs - compiler/GHC/Core/Opt/SpecConstr.hs - compiler/GHC/Core/Opt/Specialise.hs - compiler/GHC/Core/Ppr.hs - compiler/GHC/Core/Rules.hs - compiler/GHC/Core/SimpleOpt.hs - compiler/GHC/Core/TyCo/Subst.hs - compiler/GHC/CoreToStg/Prep.hs - compiler/GHC/Data/List/SetOps.hs - compiler/GHC/Driver/Config/Core/Lint.hs - compiler/GHC/HsToCore/Pmc/Solver.hs - compiler/GHC/IfaceToCore.hs - compiler/GHC/Types/Id/Make.hs - testsuite/tests/codeGen/should_compile/T25177.stderr - testsuite/tests/deSugar/should_compile/T13208.stdout - testsuite/tests/linters/notes.stdout - testsuite/tests/numeric/should_compile/T15547.stderr - testsuite/tests/numeric/should_compile/T20347.stderr - testsuite/tests/numeric/should_compile/T20374.stderr - testsuite/tests/numeric/should_compile/T20376.stderr - + testsuite/tests/perf/compiler/T26989.hs - + testsuite/tests/perf/compiler/T26989a.hs - testsuite/tests/perf/compiler/all.T - testsuite/tests/printer/T18052a.stderr - testsuite/tests/simplCore/should_compile/DsSpecPragmas.stderr - testsuite/tests/simplCore/should_compile/RewriteHigherOrderPatterns.stderr - testsuite/tests/simplCore/should_compile/T15205.stderr - testsuite/tests/simplCore/should_compile/T18668.stderr - testsuite/tests/simplCore/should_compile/T19246.stderr - testsuite/tests/simplCore/should_compile/T19599.stderr - testsuite/tests/simplCore/should_compile/T19599a.stderr - testsuite/tests/simplCore/should_compile/T21917.stderr - testsuite/tests/simplCore/should_compile/T23074.stderr - testsuite/tests/simplCore/should_compile/T24359a.stderr - testsuite/tests/simplCore/should_compile/T25160.stderr - testsuite/tests/simplCore/should_compile/T25718c.stderr-ws-32 - testsuite/tests/simplCore/should_compile/T25718c.stderr-ws-64 - testsuite/tests/simplCore/should_compile/T26051.stderr - testsuite/tests/simplCore/should_compile/T26116.stderr - testsuite/tests/simplCore/should_compile/T8331.stderr - testsuite/tests/simplCore/should_compile/T8848a.stderr - testsuite/tests/simplCore/should_compile/spec004.stderr - testsuite/tests/typecheck/should_compile/T13032.stderr The diff was not included because it is too large. View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/51e0a77c83a180aa9d79ed8d757b290… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/51e0a77c83a180aa9d79ed8d757b290… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/marge_bot_batch_merge_job] 5 commits: Add type families: Tuple, Constraints, Tuple#, Sum#
by Marge Bot (＠marge-bot) 17 May '26

17 May '26

Marge Bot pushed to branch wip/marge_bot_batch_merge_job at Glasgow Haskell Compiler / GHC Commits: 63ddbc76 by Vladislav Zavialov at 2026-05-17T10:06:08-04:00 Add type families: Tuple, Constraints, Tuple#, Sum# These type families map tuples of types to the corresponding Tuple<N>, Tuple<N>#, CTuple<N>, and Sum<N># types. Some examples at N=2: Tuple (Int, Bool) = Tuple2 Int Bool Constraints (Show a, Eq a) = CTuple2 (Show a) (Eq a) Tuple# (Int#, Float#) = Tuple2# Int# Float# Sum# (Int#, Float#) = Sum2# Int# Float# See GHC Proposal #145 "Non-punning list and tuple syntax". To make the Sum# instance at N=64 possible, this patch also introduces the Sum64# constructor declaration and bumps mAX_SUM_SIZE from 63 to 64. Metric Increase: ghc_experimental_dir - - - - - 348c7f07 by fendor at 2026-05-17T10:06:09-04:00 Fix regression T27202: `:load` and `:add` work in GHCi To fix the regression there are conceptually two major things that we fix: * We don't remove the `importDirs` from `interactive-session` * When `:add`ing a module, we don't try to find them via PackageImports * The PackageImport is wrong as we can't know the package-name at this stage in ghc/UI.hs What does it mean to not remove the `importDirs` from `interactive-session`? It means that, given some initial `DynFlags`, we will use those `importDirs` in `interactive-session`. The initial `DynFlags`, however, depend on how you initialise the GHC session. For a simple session, initialised by ghc -isrc -this-unit-id main It is simple, just use the `DynFlags` given on the cli. Thus, `main` and `interactive-session` will have the same `DynFlags`, except for the `homeUnitId` and `interactive-session` depends on `main` by construction of the GHCi session. What about a multiple home unit session, though? ghc -unit @unit1 -unit @unit2 What are the `DynFlags` in this cli invocation? It shouldn't be either `@unti1` nor `@unit2`, as the order shouldn't matter or any other implicit condition. For consistency, we decide that the initial `DynFlags` are the top `DynFlags` on the cli, ignoring `-unit` flags. Thus, in this example, there are no `importsDirs` regardless of what we might find in `@unit1` and `@unit2`. But in this invocation: ghc -isrc -unit @unit1 -unit @unit2 The `interactive-session` will have the `importsDirs` `src`. Note, `-isrc` will be inherited in `@unit1` and `@unit2`, so you need to explicitly use `-i` to clear the `importsDirs`, in order to avoid accidentally adding `src` as an import directory to all other home units. This fix has been made possible by the improvements introduced in !15888, which avoids ambiguity when a home unit shares the `importsDirs` with the `interactive-session`, on top of being much faster for multiple home units. Adds regression tests for T27202 for `:load`ing and `:add`ing modules that are located in import directories. - - - - - 060cfe18 by fendor at 2026-05-17T10:06:09-04:00 Use home unit package db stacks in GHCi prompt and session unit In order to import modules from home unit dependencies (e.g., `Data.Map`), the ghci prompt unit needs to populate its `UnitState`. This is tricky to handle correctly, which `PackageDBFlag`s should we use to populate the `UnitState`? We decide, the most intuitive solution for users is to depend on all `PackageDBFlag`s, so that any dependency can be imported in GHCi. This assumes consistency in the `PackageDBFlag`s, so no two home units specify `PackageDBFlag`s that are inconsistent with each other. We could simply concat all the `PackageDBFlag`s of the existing home units, but later `PackageDBFlag`s shadow earlier ones, leading to the last processed home units' `PackageDBFlag`s to shadow the earlier ones. This is hard to fix, we need to give users the capability to provide ghc options for the ghci prompt home unit. However, as this is considerably more work, we decided on an approximation that should work out most of the time. Package Db stacks in cabal and stack follow a certain structure: -no-user-package-db > -package-db $cabal-store > -package-db $local-db The first two arguments are always the same, namely the `-no-user-package-db` and `-package-db`. We compute the longest common prefix over all home units, and use that as the start of the package db stack. Then, over the rest of the `PackageDBFlag`s, we simply take the union and append them to our initial stack. We assume, that the rest of package dbs only defines very few, "local" units that are usually not shadowing each other. This allows us to get a relatively consistent package database stack for the ghci prompt home unit. Similar reasoning applies to the session unit in order to add modules to the session and have dependencies available in the module. We do something similar for `-package` flags, to make sure only the correct units are actually visible in the ghci session. This time, we simply take the union of all `PackageFlag`s, allowing us to import modules from the home unit dependencies. In the future, it would be beneficial to allow the user to provide the exact ghc options to control the visibilities. For now, this will have to do. - - - - - fcd7ac8c by Duncan Coutts at 2026-05-17T10:06:09-04:00 Document removal of the signal-based interval timer Update mentions within the RTS section of the users guide. Add a changelog entry. - - - - - 3ebc840e by Duncan Coutts at 2026-05-17T10:06:09-04:00 Fix section for an recent changelog entry - - - - - 93 changed files: - + changelog.d/T27202 - changelog.d/dynamic-trace-flags - + changelog.d/lib-add-tuple-tyfam-27179 - + changelog.d/no-more-timer-signal - compiler/GHC/Driver/DynFlags.hs - compiler/GHC/Settings/Constants.hs - compiler/GHC/Unit/State.hs - docs/users_guide/profiling.rst - docs/users_guide/runtime_control.rst - ghc/GHCi/UI.hs - ghc/Main.hs - libraries/base/src/GHC/Base.hs - libraries/base/src/GHC/Exts.hs - libraries/ghc-experimental/src/Data/Sum/Experimental.hs - libraries/ghc-experimental/src/Data/Tuple/Experimental.hs - libraries/ghc-internal/src/GHC/Internal/Base.hs - libraries/ghc-internal/src/GHC/Internal/Exts.hs - libraries/ghc-internal/src/GHC/Internal/Types.hs - testsuite/tests/driver/fat-iface/fat014.stdout - + testsuite/tests/ghci/prog-mhu006/Makefile - + testsuite/tests/ghci/prog-mhu006/a/A.hs - + testsuite/tests/ghci/prog-mhu006/all.T - + testsuite/tests/ghci/prog-mhu006/b/B.hs - + testsuite/tests/ghci/prog-mhu006/prog-mhu006a.script - + testsuite/tests/ghci/prog-mhu006/prog-mhu006a.stdout - + testsuite/tests/ghci/prog-mhu006/unitA - + testsuite/tests/ghci/prog-mhu006/unitB - testsuite/tests/ghci/prog018/prog018.stdout - testsuite/tests/ghci/prog020/Makefile - testsuite/tests/ghci/prog020/all.T - testsuite/tests/ghci/prog020/ghci.prog020.script → testsuite/tests/ghci/prog020/ghci.prog020a.script - testsuite/tests/ghci/prog020/ghci.prog020.stderr → testsuite/tests/ghci/prog020/ghci.prog020a.stderr - testsuite/tests/ghci/prog020/ghci.prog020.stdout → testsuite/tests/ghci/prog020/ghci.prog020a.stdout - + testsuite/tests/ghci/prog020/ghci.prog020b.script - + testsuite/tests/ghci/prog020/ghci.prog020b.stderr - + testsuite/tests/ghci/prog020/ghci.prog020b.stdout - + testsuite/tests/ghci/prog023/Makefile - + testsuite/tests/ghci/prog023/all.T - + testsuite/tests/ghci/prog023/prog023a.script - + testsuite/tests/ghci/prog023/prog023a.stdout - + testsuite/tests/ghci/prog023/prog023b.script - + testsuite/tests/ghci/prog023/prog023b.stdout - + testsuite/tests/ghci/prog023/src/A.hs - + testsuite/tests/ghci/prog024/Makefile - + testsuite/tests/ghci/prog024/all.T - + testsuite/tests/ghci/prog024/prog024a.script - + testsuite/tests/ghci/prog024/prog024a.stdout - + testsuite/tests/ghci/prog024/prog024b.script - + testsuite/tests/ghci/prog024/prog024b.stdout - + testsuite/tests/ghci/prog024/prog024c.script - + testsuite/tests/ghci/prog024/prog024c.stderr - + testsuite/tests/ghci/prog024/prog024c.stdout - + testsuite/tests/ghci/prog024/prog024d.script - + testsuite/tests/ghci/prog024/prog024d.stderr - + testsuite/tests/ghci/prog024/prog024d.stdout - + testsuite/tests/ghci/prog024/prog024e.script - + testsuite/tests/ghci/prog024/prog024e.stdout - + testsuite/tests/ghci/prog024/prog024f.script - + testsuite/tests/ghci/prog024/prog024f.stdout - + testsuite/tests/ghci/prog024/src/A.hs - + testsuite/tests/ghci/prog024/src/B.hs - + testsuite/tests/ghci/prog025/Makefile - + testsuite/tests/ghci/prog025/a/A.hs - + testsuite/tests/ghci/prog025/all.T - + testsuite/tests/ghci/prog025/prog025a.script - + testsuite/tests/ghci/prog025/prog025a.stdout - + testsuite/tests/ghci/prog025/prog025b.script - + testsuite/tests/ghci/prog025/prog025b.stdout - + testsuite/tests/ghci/prog025/testpkg/Test.hs - + testsuite/tests/ghci/prog025/testpkg/testpkg-0.1.0.0.pkg - + testsuite/tests/ghci/prog025/testpkg/testpkg-0.2.0.0.pkg - + testsuite/tests/ghci/prog025/unitA - testsuite/tests/ghci/scripts/ListTuplePunsPprNoAbbrevTuple.stdout - testsuite/tests/ghci/scripts/T13997.stdout - testsuite/tests/ghci/scripts/T1914.stdout - testsuite/tests/ghci/scripts/T20217.stdout - testsuite/tests/ghci/scripts/T8042.stdout - testsuite/tests/ghci/scripts/T8042recomp.stdout - testsuite/tests/ghci/scripts/all.T - testsuite/tests/ghci/should_run/T10920.stderr - testsuite/tests/interface-stability/ghc-experimental-exports.stdout - testsuite/tests/interface-stability/ghc-experimental-exports.stdout-mingw32 - testsuite/tests/interface-stability/ghc-prim-exports.stdout - testsuite/tests/interface-stability/ghc-prim-exports.stdout-mingw32 - testsuite/tests/parser/should_compile/ListTuplePunsSuccess1.hs - testsuite/tests/parser/should_compile/all.T - + testsuite/tests/parser/should_fail/ListTuplePunsFail6.hs - + testsuite/tests/parser/should_fail/ListTuplePunsFail6.stderr - testsuite/tests/parser/should_fail/all.T - testsuite/tests/parser/should_run/ListTuplePunsConstraints.hs - testsuite/tests/profiling/should_run/callstack001.stdout - + testsuite/tests/typecheck/should_compile/T23135.hs - testsuite/tests/typecheck/should_compile/all.T The diff was not included because it is too large. View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/8fa4f1d1eb16528efe91918f3ed3c4… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/8fa4f1d1eb16528efe91918f3ed3c4… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/wenkokke/trace-ipe] 4 commits: ghc-internal: Add TraceFlags.traceIPE
by Wen Kokke (＠wenkokke) 17 May '26

17 May '26

Wen Kokke pushed to branch wip/wenkokke/trace-ipe at Glasgow Haskell Compiler / GHC Commits: 38404984 by Wen Kokke at 2026-05-17T11:01:36+01:00 ghc-internal: Add TraceFlags.traceIPE - - - - - 0f7c6dc7 by Wen Kokke at 2026-05-17T11:01:39+01:00 testsuite: Add test for TraceFlags.traceIpe - - - - - 8cad4a0d by Wen Kokke at 2026-05-17T11:01:39+01:00 ghc-internal: Add DebugFlags.ipe - - - - - 166400be by Wen Kokke at 2026-05-17T11:01:39+01:00 testsuite: Add test for DebugFlags.ipe - - - - - 10 changed files: - libraries/ghc-internal/src/GHC/Internal/RTS/Flags.hsc - testsuite/tests/interface-stability/ghc-experimental-exports.stdout - testsuite/tests/interface-stability/ghc-experimental-exports.stdout-mingw32 - + testsuite/tests/rts/T25275/DebugIpe.hs - + testsuite/tests/rts/T25275/T25275_A.stdout - + testsuite/tests/rts/T25275/T25275_B.stdout - + testsuite/tests/rts/T25275/T25275_C.stdout - + testsuite/tests/rts/T25275/T25275_D.stdout - + testsuite/tests/rts/T25275/TraceIpe.hs - + testsuite/tests/rts/T25275/all.T Changes: ===================================== libraries/ghc-internal/src/GHC/Internal/RTS/Flags.hsc ===================================== @@ -211,6 +211,8 @@ data DebugFlags = DebugFlags , squeeze :: Bool -- ^ @z@ stack squeezing & lazy blackholing , hpc :: Bool -- ^ @c@ coverage , sparks :: Bool -- ^ @r@ + , ipe :: Bool -- ^ @I@ + -- @since ghc-experimental-10.0.0 } deriving ( Show -- ^ @since base-4.8.0.0 , Generic -- ^ @since base-4.15.0.0 ) @@ -359,6 +361,8 @@ data TraceFlags = TraceFlags , sparksSampled :: Bool -- ^ trace spark events by a sampled method , sparksFull :: Bool -- ^ trace spark events 100% accurately , user :: Bool -- ^ trace user events (emitted from Haskell code) + , traceIpe :: Bool -- ^ trace IPE events + -- @since ghc-experimental-10.0.0 } deriving ( Show -- ^ @since base-4.8.0.0 , Generic -- ^ @since base-4.15.0.0 ) @@ -588,6 +592,8 @@ getDebugFlags = do (#{peek DEBUG_FLAGS, hpc} ptr :: IO CBool)) <*> (toBool <$> (#{peek DEBUG_FLAGS, sparks} ptr :: IO CBool)) + <*> (toBool <$> + (#{peek DEBUG_FLAGS, ipe} ptr :: IO CBool)) getCCFlags :: IO CCFlags getCCFlags = do @@ -628,7 +634,7 @@ getTraceFlags :: IO TraceFlags getTraceFlags = do #if defined(javascript_HOST_ARCH) -- The JS backend does not currently have trace flags - return (TraceFlags TraceNone False False False False False False False) + return (TraceFlags TraceNone False False False False False False False False) #else let ptr = (#ptr RTS_FLAGS, TraceFlags) rtsFlagsPtr TraceFlags <$> (toEnum . fromIntegral @@ -647,6 +653,8 @@ getTraceFlags = do (#{peek TRACE_FLAGS, sparks_full} ptr :: IO CBool)) <*> (toBool <$> (#{peek TRACE_FLAGS, user} ptr :: IO CBool)) + <*> (toBool <$> + (#{peek TRACE_FLAGS, ipe} ptr :: IO CBool)) #endif getTickyFlags :: IO TickyFlags ===================================== testsuite/tests/interface-stability/ghc-experimental-exports.stdout ===================================== @@ -6428,7 +6428,7 @@ module GHC.RTS.Flags.Experimental where type ConcFlags :: * data ConcFlags = ConcFlags {ctxtSwitchTime :: RtsTime, ctxtSwitchTicks :: GHC.Internal.Types.Int} type DebugFlags :: * - data DebugFlags = DebugFlags {scheduler :: GHC.Internal.Types.Bool, interpreter :: GHC.Internal.Types.Bool, weak :: GHC.Internal.Types.Bool, gccafs :: GHC.Internal.Types.Bool, gc :: GHC.Internal.Types.Bool, nonmoving_gc :: GHC.Internal.Types.Bool, block_alloc :: GHC.Internal.Types.Bool, sanity :: GHC.Internal.Types.Bool, stable :: GHC.Internal.Types.Bool, prof :: GHC.Internal.Types.Bool, linker :: GHC.Internal.Types.Bool, apply :: GHC.Internal.Types.Bool, stm :: GHC.Internal.Types.Bool, squeeze :: GHC.Internal.Types.Bool, hpc :: GHC.Internal.Types.Bool, sparks :: GHC.Internal.Types.Bool} + data DebugFlags = DebugFlags {scheduler :: GHC.Internal.Types.Bool, interpreter :: GHC.Internal.Types.Bool, weak :: GHC.Internal.Types.Bool, gccafs :: GHC.Internal.Types.Bool, gc :: GHC.Internal.Types.Bool, nonmoving_gc :: GHC.Internal.Types.Bool, block_alloc :: GHC.Internal.Types.Bool, sanity :: GHC.Internal.Types.Bool, stable :: GHC.Internal.Types.Bool, prof :: GHC.Internal.Types.Bool, linker :: GHC.Internal.Types.Bool, apply :: GHC.Internal.Types.Bool, stm :: GHC.Internal.Types.Bool, squeeze :: GHC.Internal.Types.Bool, hpc :: GHC.Internal.Types.Bool, sparks :: GHC.Internal.Types.Bool, ipe :: GHC.Internal.Types.Bool} type DoCostCentres :: * data DoCostCentres = CostCentresNone | CostCentresSummary | CostCentresVerbose | CostCentresAll | CostCentresJSON type DoHeapProfile :: * @@ -6505,7 +6505,7 @@ module GHC.RTS.Flags.Experimental where type TickyFlags :: * data TickyFlags = TickyFlags {showTickyStats :: GHC.Internal.Types.Bool, tickyFile :: GHC.Internal.Maybe.Maybe GHC.Internal.IO.FilePath} type TraceFlags :: * - data TraceFlags = TraceFlags {tracing :: DoTrace, timestamp :: GHC.Internal.Types.Bool, traceScheduler :: GHC.Internal.Types.Bool, traceGc :: GHC.Internal.Types.Bool, traceNonmovingGc :: GHC.Internal.Types.Bool, sparksSampled :: GHC.Internal.Types.Bool, sparksFull :: GHC.Internal.Types.Bool, user :: GHC.Internal.Types.Bool} + data TraceFlags = TraceFlags {tracing :: DoTrace, timestamp :: GHC.Internal.Types.Bool, traceScheduler :: GHC.Internal.Types.Bool, traceGc :: GHC.Internal.Types.Bool, traceNonmovingGc :: GHC.Internal.Types.Bool, sparksSampled :: GHC.Internal.Types.Bool, sparksFull :: GHC.Internal.Types.Bool, user :: GHC.Internal.Types.Bool, traceIpe :: GHC.Internal.Types.Bool} getCCFlags :: GHC.Internal.Types.IO CCFlags getConcFlags :: GHC.Internal.Types.IO ConcFlags getDebugFlags :: GHC.Internal.Types.IO DebugFlags ===================================== testsuite/tests/interface-stability/ghc-experimental-exports.stdout-mingw32 ===================================== @@ -6431,7 +6431,7 @@ module GHC.RTS.Flags.Experimental where type ConcFlags :: * data ConcFlags = ConcFlags {ctxtSwitchTime :: RtsTime, ctxtSwitchTicks :: GHC.Internal.Types.Int} type DebugFlags :: * - data DebugFlags = DebugFlags {scheduler :: GHC.Internal.Types.Bool, interpreter :: GHC.Internal.Types.Bool, weak :: GHC.Internal.Types.Bool, gccafs :: GHC.Internal.Types.Bool, gc :: GHC.Internal.Types.Bool, nonmoving_gc :: GHC.Internal.Types.Bool, block_alloc :: GHC.Internal.Types.Bool, sanity :: GHC.Internal.Types.Bool, stable :: GHC.Internal.Types.Bool, prof :: GHC.Internal.Types.Bool, linker :: GHC.Internal.Types.Bool, apply :: GHC.Internal.Types.Bool, stm :: GHC.Internal.Types.Bool, squeeze :: GHC.Internal.Types.Bool, hpc :: GHC.Internal.Types.Bool, sparks :: GHC.Internal.Types.Bool} + data DebugFlags = DebugFlags {scheduler :: GHC.Internal.Types.Bool, interpreter :: GHC.Internal.Types.Bool, weak :: GHC.Internal.Types.Bool, gccafs :: GHC.Internal.Types.Bool, gc :: GHC.Internal.Types.Bool, nonmoving_gc :: GHC.Internal.Types.Bool, block_alloc :: GHC.Internal.Types.Bool, sanity :: GHC.Internal.Types.Bool, stable :: GHC.Internal.Types.Bool, prof :: GHC.Internal.Types.Bool, linker :: GHC.Internal.Types.Bool, apply :: GHC.Internal.Types.Bool, stm :: GHC.Internal.Types.Bool, squeeze :: GHC.Internal.Types.Bool, hpc :: GHC.Internal.Types.Bool, sparks :: GHC.Internal.Types.Bool, ipe :: GHC.Internal.Types.Bool} type DoCostCentres :: * data DoCostCentres = CostCentresNone | CostCentresSummary | CostCentresVerbose | CostCentresAll | CostCentresJSON type DoHeapProfile :: * @@ -6508,7 +6508,7 @@ module GHC.RTS.Flags.Experimental where type TickyFlags :: * data TickyFlags = TickyFlags {showTickyStats :: GHC.Internal.Types.Bool, tickyFile :: GHC.Internal.Maybe.Maybe GHC.Internal.IO.FilePath} type TraceFlags :: * - data TraceFlags = TraceFlags {tracing :: DoTrace, timestamp :: GHC.Internal.Types.Bool, traceScheduler :: GHC.Internal.Types.Bool, traceGc :: GHC.Internal.Types.Bool, traceNonmovingGc :: GHC.Internal.Types.Bool, sparksSampled :: GHC.Internal.Types.Bool, sparksFull :: GHC.Internal.Types.Bool, user :: GHC.Internal.Types.Bool} + data TraceFlags = TraceFlags {tracing :: DoTrace, timestamp :: GHC.Internal.Types.Bool, traceScheduler :: GHC.Internal.Types.Bool, traceGc :: GHC.Internal.Types.Bool, traceNonmovingGc :: GHC.Internal.Types.Bool, sparksSampled :: GHC.Internal.Types.Bool, sparksFull :: GHC.Internal.Types.Bool, user :: GHC.Internal.Types.Bool, traceIpe :: GHC.Internal.Types.Bool} getCCFlags :: GHC.Internal.Types.IO CCFlags getConcFlags :: GHC.Internal.Types.IO ConcFlags getDebugFlags :: GHC.Internal.Types.IO DebugFlags ===================================== testsuite/tests/rts/T25275/DebugIpe.hs ===================================== @@ -0,0 +1,6 @@ +module Main where + +import GHC.RTS.Flags.Experimental (DebugFlags (..), getDebugFlags) + +main :: IO () +main = print . ipe =<< getDebugFlags ===================================== testsuite/tests/rts/T25275/T25275_A.stdout ===================================== @@ -0,0 +1 @@ +False \ No newline at end of file ===================================== testsuite/tests/rts/T25275/T25275_B.stdout ===================================== @@ -0,0 +1 @@ +True \ No newline at end of file ===================================== testsuite/tests/rts/T25275/T25275_C.stdout ===================================== @@ -0,0 +1 @@ +False \ No newline at end of file ===================================== testsuite/tests/rts/T25275/T25275_D.stdout ===================================== @@ -0,0 +1 @@ +True \ No newline at end of file ===================================== testsuite/tests/rts/T25275/TraceIpe.hs ===================================== @@ -0,0 +1,6 @@ +module Main where + +import GHC.RTS.Flags.Experimental (TraceFlags (..), getTraceFlags) + +main :: IO () +main = print . traceIpe =<< getTraceFlags ===================================== testsuite/tests/rts/T25275/all.T ===================================== @@ -0,0 +1,43 @@ +# Compile and run with default RTS options +test( + 'T25275_A', + [ + extra_files(['TraceIpe.hs']), + ], + multimod_compile_and_run, + ['TraceIpe', ''], +) + +# Compile and run with -lI +test( + 'T25275_B', + [ + extra_files(['TraceIpe.hs']), + extra_run_opts('+RTS -lI -RTS'), + ], + multimod_compile_and_run, + ['TraceIpe', ''], +) + +# Compile and run with default RTS options +test( + 'T25275_C', + [ + only_ways(['debug']), + extra_files(['DebugIpe.hs']), + ], + multimod_compile_and_run, + ['DebugIpe', ''], +) + +# Compile and run with -DI +test( + 'T25275_D', + [ + only_ways(['debug']), + extra_files(['DebugIpe.hs']), + extra_run_opts('+RTS -DI -RTS'), + ], + multimod_compile_and_run, + ['DebugIpe', ''], +) View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/c0709b8bccd3ec0332270758b4e452… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/c0709b8bccd3ec0332270758b4e452… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/marge_bot_batch_merge_job] 5 commits: Add type families: Tuple, Constraints, Tuple#, Sum#
by Marge Bot (＠marge-bot) 17 May '26

17 May '26

Marge Bot pushed to branch wip/marge_bot_batch_merge_job at Glasgow Haskell Compiler / GHC Commits: 55e54b26 by Vladislav Zavialov at 2026-05-17T05:54:05-04:00 Add type families: Tuple, Constraints, Tuple#, Sum# These type families map tuples of types to the corresponding Tuple<N>, Tuple<N>#, CTuple<N>, and Sum<N># types. Some examples at N=2: Tuple (Int, Bool) = Tuple2 Int Bool Constraints (Show a, Eq a) = CTuple2 (Show a) (Eq a) Tuple# (Int#, Float#) = Tuple2# Int# Float# Sum# (Int#, Float#) = Sum2# Int# Float# See GHC Proposal #145 "Non-punning list and tuple syntax". To make the Sum# instance at N=64 possible, this patch also introduces the Sum64# constructor declaration and bumps mAX_SUM_SIZE from 63 to 64. Metric Increase: ghc_experimental_dir - - - - - fba33694 by fendor at 2026-05-17T05:54:06-04:00 Fix regression T27202: `:load` and `:add` work in GHCi To fix the regression there are conceptually two major things that we fix: * We don't remove the `importDirs` from `interactive-session` * When `:add`ing a module, we don't try to find them via PackageImports * The PackageImport is wrong as we can't know the package-name at this stage in ghc/UI.hs What does it mean to not remove the `importDirs` from `interactive-session`? It means that, given some initial `DynFlags`, we will use those `importDirs` in `interactive-session`. The initial `DynFlags`, however, depend on how you initialise the GHC session. For a simple session, initialised by ghc -isrc -this-unit-id main It is simple, just use the `DynFlags` given on the cli. Thus, `main` and `interactive-session` will have the same `DynFlags`, except for the `homeUnitId` and `interactive-session` depends on `main` by construction of the GHCi session. What about a multiple home unit session, though? ghc -unit @unit1 -unit @unit2 What are the `DynFlags` in this cli invocation? It shouldn't be either `@unti1` nor `@unit2`, as the order shouldn't matter or any other implicit condition. For consistency, we decide that the initial `DynFlags` are the top `DynFlags` on the cli, ignoring `-unit` flags. Thus, in this example, there are no `importsDirs` regardless of what we might find in `@unit1` and `@unit2`. But in this invocation: ghc -isrc -unit @unit1 -unit @unit2 The `interactive-session` will have the `importsDirs` `src`. Note, `-isrc` will be inherited in `@unit1` and `@unit2`, so you need to explicitly use `-i` to clear the `importsDirs`, in order to avoid accidentally adding `src` as an import directory to all other home units. This fix has been made possible by the improvements introduced in !15888, which avoids ambiguity when a home unit shares the `importsDirs` with the `interactive-session`, on top of being much faster for multiple home units. Adds regression tests for T27202 for `:load`ing and `:add`ing modules that are located in import directories. - - - - - 2f7e64e8 by fendor at 2026-05-17T05:54:06-04:00 Use home unit package db stacks in GHCi prompt and session unit In order to import modules from home unit dependencies (e.g., `Data.Map`), the ghci prompt unit needs to populate its `UnitState`. This is tricky to handle correctly, which `PackageDBFlag`s should we use to populate the `UnitState`? We decide, the most intuitive solution for users is to depend on all `PackageDBFlag`s, so that any dependency can be imported in GHCi. This assumes consistency in the `PackageDBFlag`s, so no two home units specify `PackageDBFlag`s that are inconsistent with each other. We could simply concat all the `PackageDBFlag`s of the existing home units, but later `PackageDBFlag`s shadow earlier ones, leading to the last processed home units' `PackageDBFlag`s to shadow the earlier ones. This is hard to fix, we need to give users the capability to provide ghc options for the ghci prompt home unit. However, as this is considerably more work, we decided on an approximation that should work out most of the time. Package Db stacks in cabal and stack follow a certain structure: -no-user-package-db > -package-db $cabal-store > -package-db $local-db The first two arguments are always the same, namely the `-no-user-package-db` and `-package-db`. We compute the longest common prefix over all home units, and use that as the start of the package db stack. Then, over the rest of the `PackageDBFlag`s, we simply take the union and append them to our initial stack. We assume, that the rest of package dbs only defines very few, "local" units that are usually not shadowing each other. This allows us to get a relatively consistent package database stack for the ghci prompt home unit. Similar reasoning applies to the session unit in order to add modules to the session and have dependencies available in the module. We do something similar for `-package` flags, to make sure only the correct units are actually visible in the ghci session. This time, we simply take the union of all `PackageFlag`s, allowing us to import modules from the home unit dependencies. In the future, it would be beneficial to allow the user to provide the exact ghc options to control the visibilities. For now, this will have to do. - - - - - a15066e8 by Duncan Coutts at 2026-05-17T05:54:07-04:00 Document removal of the signal-based interval timer Update mentions within the RTS section of the users guide. Add a changelog entry. - - - - - 8fa4f1d1 by Duncan Coutts at 2026-05-17T05:54:07-04:00 Fix section for an recent changelog entry - - - - - 93 changed files: - + changelog.d/T27202 - changelog.d/dynamic-trace-flags - + changelog.d/lib-add-tuple-tyfam-27179 - + changelog.d/no-more-timer-signal - compiler/GHC/Driver/DynFlags.hs - compiler/GHC/Settings/Constants.hs - compiler/GHC/Unit/State.hs - docs/users_guide/profiling.rst - docs/users_guide/runtime_control.rst - ghc/GHCi/UI.hs - ghc/Main.hs - libraries/base/src/GHC/Base.hs - libraries/base/src/GHC/Exts.hs - libraries/ghc-experimental/src/Data/Sum/Experimental.hs - libraries/ghc-experimental/src/Data/Tuple/Experimental.hs - libraries/ghc-internal/src/GHC/Internal/Base.hs - libraries/ghc-internal/src/GHC/Internal/Exts.hs - libraries/ghc-internal/src/GHC/Internal/Types.hs - testsuite/tests/driver/fat-iface/fat014.stdout - + testsuite/tests/ghci/prog-mhu006/Makefile - + testsuite/tests/ghci/prog-mhu006/a/A.hs - + testsuite/tests/ghci/prog-mhu006/all.T - + testsuite/tests/ghci/prog-mhu006/b/B.hs - + testsuite/tests/ghci/prog-mhu006/prog-mhu006a.script - + testsuite/tests/ghci/prog-mhu006/prog-mhu006a.stdout - + testsuite/tests/ghci/prog-mhu006/unitA - + testsuite/tests/ghci/prog-mhu006/unitB - testsuite/tests/ghci/prog018/prog018.stdout - testsuite/tests/ghci/prog020/Makefile - testsuite/tests/ghci/prog020/all.T - testsuite/tests/ghci/prog020/ghci.prog020.script → testsuite/tests/ghci/prog020/ghci.prog020a.script - testsuite/tests/ghci/prog020/ghci.prog020.stderr → testsuite/tests/ghci/prog020/ghci.prog020a.stderr - testsuite/tests/ghci/prog020/ghci.prog020.stdout → testsuite/tests/ghci/prog020/ghci.prog020a.stdout - + testsuite/tests/ghci/prog020/ghci.prog020b.script - + testsuite/tests/ghci/prog020/ghci.prog020b.stderr - + testsuite/tests/ghci/prog020/ghci.prog020b.stdout - + testsuite/tests/ghci/prog023/Makefile - + testsuite/tests/ghci/prog023/all.T - + testsuite/tests/ghci/prog023/prog023a.script - + testsuite/tests/ghci/prog023/prog023a.stdout - + testsuite/tests/ghci/prog023/prog023b.script - + testsuite/tests/ghci/prog023/prog023b.stdout - + testsuite/tests/ghci/prog023/src/A.hs - + testsuite/tests/ghci/prog024/Makefile - + testsuite/tests/ghci/prog024/all.T - + testsuite/tests/ghci/prog024/prog024a.script - + testsuite/tests/ghci/prog024/prog024a.stdout - + testsuite/tests/ghci/prog024/prog024b.script - + testsuite/tests/ghci/prog024/prog024b.stdout - + testsuite/tests/ghci/prog024/prog024c.script - + testsuite/tests/ghci/prog024/prog024c.stderr - + testsuite/tests/ghci/prog024/prog024c.stdout - + testsuite/tests/ghci/prog024/prog024d.script - + testsuite/tests/ghci/prog024/prog024d.stderr - + testsuite/tests/ghci/prog024/prog024d.stdout - + testsuite/tests/ghci/prog024/prog024e.script - + testsuite/tests/ghci/prog024/prog024e.stdout - + testsuite/tests/ghci/prog024/prog024f.script - + testsuite/tests/ghci/prog024/prog024f.stdout - + testsuite/tests/ghci/prog024/src/A.hs - + testsuite/tests/ghci/prog024/src/B.hs - + testsuite/tests/ghci/prog025/Makefile - + testsuite/tests/ghci/prog025/a/A.hs - + testsuite/tests/ghci/prog025/all.T - + testsuite/tests/ghci/prog025/prog025a.script - + testsuite/tests/ghci/prog025/prog025a.stdout - + testsuite/tests/ghci/prog025/prog025b.script - + testsuite/tests/ghci/prog025/prog025b.stdout - + testsuite/tests/ghci/prog025/testpkg/Test.hs - + testsuite/tests/ghci/prog025/testpkg/testpkg-0.1.0.0.pkg - + testsuite/tests/ghci/prog025/testpkg/testpkg-0.2.0.0.pkg - + testsuite/tests/ghci/prog025/unitA - testsuite/tests/ghci/scripts/ListTuplePunsPprNoAbbrevTuple.stdout - testsuite/tests/ghci/scripts/T13997.stdout - testsuite/tests/ghci/scripts/T1914.stdout - testsuite/tests/ghci/scripts/T20217.stdout - testsuite/tests/ghci/scripts/T8042.stdout - testsuite/tests/ghci/scripts/T8042recomp.stdout - testsuite/tests/ghci/scripts/all.T - testsuite/tests/ghci/should_run/T10920.stderr - testsuite/tests/interface-stability/ghc-experimental-exports.stdout - testsuite/tests/interface-stability/ghc-experimental-exports.stdout-mingw32 - testsuite/tests/interface-stability/ghc-prim-exports.stdout - testsuite/tests/interface-stability/ghc-prim-exports.stdout-mingw32 - testsuite/tests/parser/should_compile/ListTuplePunsSuccess1.hs - testsuite/tests/parser/should_compile/all.T - + testsuite/tests/parser/should_fail/ListTuplePunsFail6.hs - + testsuite/tests/parser/should_fail/ListTuplePunsFail6.stderr - testsuite/tests/parser/should_fail/all.T - testsuite/tests/parser/should_run/ListTuplePunsConstraints.hs - testsuite/tests/profiling/should_run/callstack001.stdout - + testsuite/tests/typecheck/should_compile/T23135.hs - testsuite/tests/typecheck/should_compile/all.T The diff was not included because it is too large. View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/888561626fcdf28449dde0f277b804… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/888561626fcdf28449dde0f277b804… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/marge_bot_batch_merge_job] 10 commits: Add type families: Tuple, Constraints, Tuple#, Sum#
by Marge Bot (＠marge-bot) 16 May '26

16 May '26

Marge Bot pushed to branch wip/marge_bot_batch_merge_job at Glasgow Haskell Compiler / GHC Commits: 812ecc96 by Vladislav Zavialov at 2026-05-17T02:42:30-04:00 Add type families: Tuple, Constraints, Tuple#, Sum# These type families map tuples of types to the corresponding Tuple<N>, Tuple<N>#, CTuple<N>, and Sum<N># types. Some examples at N=2: Tuple (Int, Bool) = Tuple2 Int Bool Constraints (Show a, Eq a) = CTuple2 (Show a) (Eq a) Tuple# (Int#, Float#) = Tuple2# Int# Float# Sum# (Int#, Float#) = Sum2# Int# Float# See GHC Proposal #145 "Non-punning list and tuple syntax". To make the Sum# instance at N=64 possible, this patch also introduces the Sum64# constructor declaration and bumps mAX_SUM_SIZE from 63 to 64. Metric Increase: ghc_experimental_dir - - - - - 751afdc3 by fendor at 2026-05-17T02:42:30-04:00 Fix regression T27202: `:load` and `:add` work in GHCi To fix the regression there are conceptually two major things that we fix: * We don't remove the `importDirs` from `interactive-session` * When `:add`ing a module, we don't try to find them via PackageImports * The PackageImport is wrong as we can't know the package-name at this stage in ghc/UI.hs What does it mean to not remove the `importDirs` from `interactive-session`? It means that, given some initial `DynFlags`, we will use those `importDirs` in `interactive-session`. The initial `DynFlags`, however, depend on how you initialise the GHC session. For a simple session, initialised by ghc -isrc -this-unit-id main It is simple, just use the `DynFlags` given on the cli. Thus, `main` and `interactive-session` will have the same `DynFlags`, except for the `homeUnitId` and `interactive-session` depends on `main` by construction of the GHCi session. What about a multiple home unit session, though? ghc -unit @unit1 -unit @unit2 What are the `DynFlags` in this cli invocation? It shouldn't be either `@unti1` nor `@unit2`, as the order shouldn't matter or any other implicit condition. For consistency, we decide that the initial `DynFlags` are the top `DynFlags` on the cli, ignoring `-unit` flags. Thus, in this example, there are no `importsDirs` regardless of what we might find in `@unit1` and `@unit2`. But in this invocation: ghc -isrc -unit @unit1 -unit @unit2 The `interactive-session` will have the `importsDirs` `src`. Note, `-isrc` will be inherited in `@unit1` and `@unit2`, so you need to explicitly use `-i` to clear the `importsDirs`, in order to avoid accidentally adding `src` as an import directory to all other home units. This fix has been made possible by the improvements introduced in !15888, which avoids ambiguity when a home unit shares the `importsDirs` with the `interactive-session`, on top of being much faster for multiple home units. Adds regression tests for T27202 for `:load`ing and `:add`ing modules that are located in import directories. - - - - - 0c201858 by fendor at 2026-05-17T02:42:30-04:00 Use home unit package db stacks in GHCi prompt and session unit In order to import modules from home unit dependencies (e.g., `Data.Map`), the ghci prompt unit needs to populate its `UnitState`. This is tricky to handle correctly, which `PackageDBFlag`s should we use to populate the `UnitState`? We decide, the most intuitive solution for users is to depend on all `PackageDBFlag`s, so that any dependency can be imported in GHCi. This assumes consistency in the `PackageDBFlag`s, so no two home units specify `PackageDBFlag`s that are inconsistent with each other. We could simply concat all the `PackageDBFlag`s of the existing home units, but later `PackageDBFlag`s shadow earlier ones, leading to the last processed home units' `PackageDBFlag`s to shadow the earlier ones. This is hard to fix, we need to give users the capability to provide ghc options for the ghci prompt home unit. However, as this is considerably more work, we decided on an approximation that should work out most of the time. Package Db stacks in cabal and stack follow a certain structure: -no-user-package-db > -package-db $cabal-store > -package-db $local-db The first two arguments are always the same, namely the `-no-user-package-db` and `-package-db`. We compute the longest common prefix over all home units, and use that as the start of the package db stack. Then, over the rest of the `PackageDBFlag`s, we simply take the union and append them to our initial stack. We assume, that the rest of package dbs only defines very few, "local" units that are usually not shadowing each other. This allows us to get a relatively consistent package database stack for the ghci prompt home unit. Similar reasoning applies to the session unit in order to add modules to the session and have dependencies available in the module. We do something similar for `-package` flags, to make sure only the correct units are actually visible in the ghci session. This time, we simply take the union of all `PackageFlag`s, allowing us to import modules from the home unit dependencies. In the future, it would be beneficial to allow the user to provide the exact ghc options to control the visibilities. For now, this will have to do. - - - - - 370af7cb by Wen Kokke at 2026-05-17T02:42:31-04:00 rts: Add IPE event class for -l This commit adds a new IPE event class to the -l RTS flag. Previously, IPE events were enabled unconditionally. However, the IPE events can easily grow to hundreds or thousands of megabytes. With the new event class you can pass, e.g., -l-I to disable IPE events. - - - - - 98143bb0 by Wen Kokke at 2026-05-17T02:42:31-04:00 ghc-internal: Add TraceFlags.traceIPE - - - - - f79c4eed by Wen Kokke at 2026-05-17T02:42:31-04:00 testsuite: Add test for TraceFlags.traceIpe - - - - - 153ca438 by Wen Kokke at 2026-05-17T02:42:31-04:00 ghc-internal: Add DebugFlags.ipe - - - - - 0f48ea1b by Wen Kokke at 2026-05-17T02:42:31-04:00 testsuite: Add test for DebugFlags.ipe - - - - - 2bcaa6ad by Duncan Coutts at 2026-05-17T02:42:32-04:00 Document removal of the signal-based interval timer Update mentions within the RTS section of the users guide. Add a changelog entry. - - - - - 88856162 by Duncan Coutts at 2026-05-17T02:42:32-04:00 Fix section for an recent changelog entry - - - - - 108 changed files: - + changelog.d/T27202 - changelog.d/dynamic-trace-flags - + changelog.d/ipe-event-class - + changelog.d/lib-add-tuple-tyfam-27179 - + changelog.d/no-more-timer-signal - compiler/GHC/Driver/DynFlags.hs - compiler/GHC/Settings/Constants.hs - compiler/GHC/Unit/State.hs - docs/users_guide/profiling.rst - docs/users_guide/runtime_control.rst - ghc/GHCi/UI.hs - ghc/Main.hs - libraries/base/src/GHC/Base.hs - libraries/base/src/GHC/Exts.hs - libraries/ghc-experimental/src/Data/Sum/Experimental.hs - libraries/ghc-experimental/src/Data/Tuple/Experimental.hs - libraries/ghc-internal/src/GHC/Internal/Base.hs - libraries/ghc-internal/src/GHC/Internal/Exts.hs - libraries/ghc-internal/src/GHC/Internal/RTS/Flags.hsc - libraries/ghc-internal/src/GHC/Internal/Types.hs - rts/IPE.c - rts/RtsFlags.c - rts/Trace.c - rts/Trace.h - rts/include/rts/EventLogWriter.h - rts/include/rts/Flags.h - testsuite/tests/driver/fat-iface/fat014.stdout - + testsuite/tests/ghci/prog-mhu006/Makefile - + testsuite/tests/ghci/prog-mhu006/a/A.hs - + testsuite/tests/ghci/prog-mhu006/all.T - + testsuite/tests/ghci/prog-mhu006/b/B.hs - + testsuite/tests/ghci/prog-mhu006/prog-mhu006a.script - + testsuite/tests/ghci/prog-mhu006/prog-mhu006a.stdout - + testsuite/tests/ghci/prog-mhu006/unitA - + testsuite/tests/ghci/prog-mhu006/unitB - testsuite/tests/ghci/prog018/prog018.stdout - testsuite/tests/ghci/prog020/Makefile - testsuite/tests/ghci/prog020/all.T - testsuite/tests/ghci/prog020/ghci.prog020.script → testsuite/tests/ghci/prog020/ghci.prog020a.script - testsuite/tests/ghci/prog020/ghci.prog020.stderr → testsuite/tests/ghci/prog020/ghci.prog020a.stderr - testsuite/tests/ghci/prog020/ghci.prog020.stdout → testsuite/tests/ghci/prog020/ghci.prog020a.stdout - + testsuite/tests/ghci/prog020/ghci.prog020b.script - + testsuite/tests/ghci/prog020/ghci.prog020b.stderr - + testsuite/tests/ghci/prog020/ghci.prog020b.stdout - + testsuite/tests/ghci/prog023/Makefile - + testsuite/tests/ghci/prog023/all.T - + testsuite/tests/ghci/prog023/prog023a.script - + testsuite/tests/ghci/prog023/prog023a.stdout - + testsuite/tests/ghci/prog023/prog023b.script - + testsuite/tests/ghci/prog023/prog023b.stdout - + testsuite/tests/ghci/prog023/src/A.hs - + testsuite/tests/ghci/prog024/Makefile - + testsuite/tests/ghci/prog024/all.T - + testsuite/tests/ghci/prog024/prog024a.script - + testsuite/tests/ghci/prog024/prog024a.stdout - + testsuite/tests/ghci/prog024/prog024b.script - + testsuite/tests/ghci/prog024/prog024b.stdout - + testsuite/tests/ghci/prog024/prog024c.script - + testsuite/tests/ghci/prog024/prog024c.stderr - + testsuite/tests/ghci/prog024/prog024c.stdout - + testsuite/tests/ghci/prog024/prog024d.script - + testsuite/tests/ghci/prog024/prog024d.stderr - + testsuite/tests/ghci/prog024/prog024d.stdout - + testsuite/tests/ghci/prog024/prog024e.script - + testsuite/tests/ghci/prog024/prog024e.stdout - + testsuite/tests/ghci/prog024/prog024f.script - + testsuite/tests/ghci/prog024/prog024f.stdout - + testsuite/tests/ghci/prog024/src/A.hs - + testsuite/tests/ghci/prog024/src/B.hs - + testsuite/tests/ghci/prog025/Makefile - + testsuite/tests/ghci/prog025/a/A.hs - + testsuite/tests/ghci/prog025/all.T - + testsuite/tests/ghci/prog025/prog025a.script - + testsuite/tests/ghci/prog025/prog025a.stdout - + testsuite/tests/ghci/prog025/prog025b.script - + testsuite/tests/ghci/prog025/prog025b.stdout - + testsuite/tests/ghci/prog025/testpkg/Test.hs - + testsuite/tests/ghci/prog025/testpkg/testpkg-0.1.0.0.pkg - + testsuite/tests/ghci/prog025/testpkg/testpkg-0.2.0.0.pkg - + testsuite/tests/ghci/prog025/unitA - testsuite/tests/ghci/scripts/ListTuplePunsPprNoAbbrevTuple.stdout - testsuite/tests/ghci/scripts/T13997.stdout - testsuite/tests/ghci/scripts/T1914.stdout - testsuite/tests/ghci/scripts/T20217.stdout - testsuite/tests/ghci/scripts/T8042.stdout - testsuite/tests/ghci/scripts/T8042recomp.stdout - testsuite/tests/ghci/scripts/all.T - testsuite/tests/ghci/should_run/T10920.stderr - testsuite/tests/interface-stability/ghc-experimental-exports.stdout - testsuite/tests/interface-stability/ghc-experimental-exports.stdout-mingw32 - testsuite/tests/interface-stability/ghc-prim-exports.stdout - testsuite/tests/interface-stability/ghc-prim-exports.stdout-mingw32 - testsuite/tests/parser/should_compile/ListTuplePunsSuccess1.hs - testsuite/tests/parser/should_compile/all.T - + testsuite/tests/parser/should_fail/ListTuplePunsFail6.hs - + testsuite/tests/parser/should_fail/ListTuplePunsFail6.stderr - testsuite/tests/parser/should_fail/all.T - testsuite/tests/parser/should_run/ListTuplePunsConstraints.hs - testsuite/tests/profiling/should_run/callstack001.stdout - + testsuite/tests/rts/T25275/DebugIpe.hs - + testsuite/tests/rts/T25275/T25275_A.stdout - + testsuite/tests/rts/T25275/T25275_B.stdout - + testsuite/tests/rts/T25275/T25275_C.stdout - + testsuite/tests/rts/T25275/T25275_D.stdout - + testsuite/tests/rts/T25275/TraceIpe.hs - + testsuite/tests/rts/T25275/all.T - + testsuite/tests/typecheck/should_compile/T23135.hs - testsuite/tests/typecheck/should_compile/all.T The diff was not included because it is too large. View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/d181ff874a111d75e2d8adfec0a96c… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/d181ff874a111d75e2d8adfec0a96c… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/marge_bot_batch_merge_job] 10 commits: Add type families: Tuple, Constraints, Tuple#, Sum#
by Marge Bot (＠marge-bot) 16 May '26

16 May '26

Marge Bot pushed to branch wip/marge_bot_batch_merge_job at Glasgow Haskell Compiler / GHC Commits: 65485b00 by Vladislav Zavialov at 2026-05-16T22:56:52-04:00 Add type families: Tuple, Constraints, Tuple#, Sum# These type families map tuples of types to the corresponding Tuple<N>, Tuple<N>#, CTuple<N>, and Sum<N># types. Some examples at N=2: Tuple (Int, Bool) = Tuple2 Int Bool Constraints (Show a, Eq a) = CTuple2 (Show a) (Eq a) Tuple# (Int#, Float#) = Tuple2# Int# Float# Sum# (Int#, Float#) = Sum2# Int# Float# See GHC Proposal #145 "Non-punning list and tuple syntax". To make the Sum# instance at N=64 possible, this patch also introduces the Sum64# constructor declaration and bumps mAX_SUM_SIZE from 63 to 64. Metric Increase: ghc_experimental_dir - - - - - 133f7256 by fendor at 2026-05-16T22:56:52-04:00 Fix regression T27202: `:load` and `:add` work in GHCi To fix the regression there are conceptually two major things that we fix: * We don't remove the `importDirs` from `interactive-session` * When `:add`ing a module, we don't try to find them via PackageImports * The PackageImport is wrong as we can't know the package-name at this stage in ghc/UI.hs What does it mean to not remove the `importDirs` from `interactive-session`? It means that, given some initial `DynFlags`, we will use those `importDirs` in `interactive-session`. The initial `DynFlags`, however, depend on how you initialise the GHC session. For a simple session, initialised by ghc -isrc -this-unit-id main It is simple, just use the `DynFlags` given on the cli. Thus, `main` and `interactive-session` will have the same `DynFlags`, except for the `homeUnitId` and `interactive-session` depends on `main` by construction of the GHCi session. What about a multiple home unit session, though? ghc -unit @unit1 -unit @unit2 What are the `DynFlags` in this cli invocation? It shouldn't be either `@unti1` nor `@unit2`, as the order shouldn't matter or any other implicit condition. For consistency, we decide that the initial `DynFlags` are the top `DynFlags` on the cli, ignoring `-unit` flags. Thus, in this example, there are no `importsDirs` regardless of what we might find in `@unit1` and `@unit2`. But in this invocation: ghc -isrc -unit @unit1 -unit @unit2 The `interactive-session` will have the `importsDirs` `src`. Note, `-isrc` will be inherited in `@unit1` and `@unit2`, so you need to explicitly use `-i` to clear the `importsDirs`, in order to avoid accidentally adding `src` as an import directory to all other home units. This fix has been made possible by the improvements introduced in !15888, which avoids ambiguity when a home unit shares the `importsDirs` with the `interactive-session`, on top of being much faster for multiple home units. Adds regression tests for T27202 for `:load`ing and `:add`ing modules that are located in import directories. - - - - - 18b242a6 by fendor at 2026-05-16T22:56:52-04:00 Use home unit package db stacks in GHCi prompt and session unit In order to import modules from home unit dependencies (e.g., `Data.Map`), the ghci prompt unit needs to populate its `UnitState`. This is tricky to handle correctly, which `PackageDBFlag`s should we use to populate the `UnitState`? We decide, the most intuitive solution for users is to depend on all `PackageDBFlag`s, so that any dependency can be imported in GHCi. This assumes consistency in the `PackageDBFlag`s, so no two home units specify `PackageDBFlag`s that are inconsistent with each other. We could simply concat all the `PackageDBFlag`s of the existing home units, but later `PackageDBFlag`s shadow earlier ones, leading to the last processed home units' `PackageDBFlag`s to shadow the earlier ones. This is hard to fix, we need to give users the capability to provide ghc options for the ghci prompt home unit. However, as this is considerably more work, we decided on an approximation that should work out most of the time. Package Db stacks in cabal and stack follow a certain structure: -no-user-package-db > -package-db $cabal-store > -package-db $local-db The first two arguments are always the same, namely the `-no-user-package-db` and `-package-db`. We compute the longest common prefix over all home units, and use that as the start of the package db stack. Then, over the rest of the `PackageDBFlag`s, we simply take the union and append them to our initial stack. We assume, that the rest of package dbs only defines very few, "local" units that are usually not shadowing each other. This allows us to get a relatively consistent package database stack for the ghci prompt home unit. Similar reasoning applies to the session unit in order to add modules to the session and have dependencies available in the module. We do something similar for `-package` flags, to make sure only the correct units are actually visible in the ghci session. This time, we simply take the union of all `PackageFlag`s, allowing us to import modules from the home unit dependencies. In the future, it would be beneficial to allow the user to provide the exact ghc options to control the visibilities. For now, this will have to do. - - - - - 1447a096 by Wen Kokke at 2026-05-16T22:56:53-04:00 rts: Add IPE event class for -l This commit adds a new IPE event class to the -l RTS flag. Previously, IPE events were enabled unconditionally. However, the IPE events can easily grow to hundreds or thousands of megabytes. With the new event class you can pass, e.g., -l-I to disable IPE events. - - - - - 93fa6604 by Wen Kokke at 2026-05-16T22:56:53-04:00 ghc-internal: Add TraceFlags.traceIPE - - - - - 02eb8be8 by Wen Kokke at 2026-05-16T22:56:54-04:00 testsuite: Add test for TraceFlags.traceIpe - - - - - 8669701e by Wen Kokke at 2026-05-16T22:56:54-04:00 ghc-internal: Add DebugFlags.ipe - - - - - 4a1aa792 by Wen Kokke at 2026-05-16T22:56:54-04:00 testsuite: Add test for DebugFlags.ipe - - - - - b0274e70 by Duncan Coutts at 2026-05-16T22:56:55-04:00 Document removal of the signal-based interval timer Update mentions within the RTS section of the users guide. Add a changelog entry. - - - - - d181ff87 by Duncan Coutts at 2026-05-16T22:56:55-04:00 Fix section for an recent changelog entry - - - - - 108 changed files: - + changelog.d/T27202 - changelog.d/dynamic-trace-flags - + changelog.d/ipe-event-class - + changelog.d/lib-add-tuple-tyfam-27179 - + changelog.d/no-more-timer-signal - compiler/GHC/Driver/DynFlags.hs - compiler/GHC/Settings/Constants.hs - compiler/GHC/Unit/State.hs - docs/users_guide/profiling.rst - docs/users_guide/runtime_control.rst - ghc/GHCi/UI.hs - ghc/Main.hs - libraries/base/src/GHC/Base.hs - libraries/base/src/GHC/Exts.hs - libraries/ghc-experimental/src/Data/Sum/Experimental.hs - libraries/ghc-experimental/src/Data/Tuple/Experimental.hs - libraries/ghc-internal/src/GHC/Internal/Base.hs - libraries/ghc-internal/src/GHC/Internal/Exts.hs - libraries/ghc-internal/src/GHC/Internal/RTS/Flags.hsc - libraries/ghc-internal/src/GHC/Internal/Types.hs - rts/IPE.c - rts/RtsFlags.c - rts/Trace.c - rts/Trace.h - rts/include/rts/EventLogWriter.h - rts/include/rts/Flags.h - testsuite/tests/driver/fat-iface/fat014.stdout - + testsuite/tests/ghci/prog-mhu006/Makefile - + testsuite/tests/ghci/prog-mhu006/a/A.hs - + testsuite/tests/ghci/prog-mhu006/all.T - + testsuite/tests/ghci/prog-mhu006/b/B.hs - + testsuite/tests/ghci/prog-mhu006/prog-mhu006a.script - + testsuite/tests/ghci/prog-mhu006/prog-mhu006a.stdout - + testsuite/tests/ghci/prog-mhu006/unitA - + testsuite/tests/ghci/prog-mhu006/unitB - testsuite/tests/ghci/prog018/prog018.stdout - testsuite/tests/ghci/prog020/Makefile - testsuite/tests/ghci/prog020/all.T - testsuite/tests/ghci/prog020/ghci.prog020.script → testsuite/tests/ghci/prog020/ghci.prog020a.script - testsuite/tests/ghci/prog020/ghci.prog020.stderr → testsuite/tests/ghci/prog020/ghci.prog020a.stderr - testsuite/tests/ghci/prog020/ghci.prog020.stdout → testsuite/tests/ghci/prog020/ghci.prog020a.stdout - + testsuite/tests/ghci/prog020/ghci.prog020b.script - + testsuite/tests/ghci/prog020/ghci.prog020b.stderr - + testsuite/tests/ghci/prog020/ghci.prog020b.stdout - + testsuite/tests/ghci/prog023/Makefile - + testsuite/tests/ghci/prog023/all.T - + testsuite/tests/ghci/prog023/prog023a.script - + testsuite/tests/ghci/prog023/prog023a.stdout - + testsuite/tests/ghci/prog023/prog023b.script - + testsuite/tests/ghci/prog023/prog023b.stdout - + testsuite/tests/ghci/prog023/src/A.hs - + testsuite/tests/ghci/prog024/Makefile - + testsuite/tests/ghci/prog024/all.T - + testsuite/tests/ghci/prog024/prog024a.script - + testsuite/tests/ghci/prog024/prog024a.stdout - + testsuite/tests/ghci/prog024/prog024b.script - + testsuite/tests/ghci/prog024/prog024b.stdout - + testsuite/tests/ghci/prog024/prog024c.script - + testsuite/tests/ghci/prog024/prog024c.stderr - + testsuite/tests/ghci/prog024/prog024c.stdout - + testsuite/tests/ghci/prog024/prog024d.script - + testsuite/tests/ghci/prog024/prog024d.stderr - + testsuite/tests/ghci/prog024/prog024d.stdout - + testsuite/tests/ghci/prog024/prog024e.script - + testsuite/tests/ghci/prog024/prog024e.stdout - + testsuite/tests/ghci/prog024/prog024f.script - + testsuite/tests/ghci/prog024/prog024f.stdout - + testsuite/tests/ghci/prog024/src/A.hs - + testsuite/tests/ghci/prog024/src/B.hs - + testsuite/tests/ghci/prog025/Makefile - + testsuite/tests/ghci/prog025/a/A.hs - + testsuite/tests/ghci/prog025/all.T - + testsuite/tests/ghci/prog025/prog025a.script - + testsuite/tests/ghci/prog025/prog025a.stdout - + testsuite/tests/ghci/prog025/prog025b.script - + testsuite/tests/ghci/prog025/prog025b.stdout - + testsuite/tests/ghci/prog025/testpkg/Test.hs - + testsuite/tests/ghci/prog025/testpkg/testpkg-0.1.0.0.pkg - + testsuite/tests/ghci/prog025/testpkg/testpkg-0.2.0.0.pkg - + testsuite/tests/ghci/prog025/unitA - testsuite/tests/ghci/scripts/ListTuplePunsPprNoAbbrevTuple.stdout - testsuite/tests/ghci/scripts/T13997.stdout - testsuite/tests/ghci/scripts/T1914.stdout - testsuite/tests/ghci/scripts/T20217.stdout - testsuite/tests/ghci/scripts/T8042.stdout - testsuite/tests/ghci/scripts/T8042recomp.stdout - testsuite/tests/ghci/scripts/all.T - testsuite/tests/ghci/should_run/T10920.stderr - testsuite/tests/interface-stability/ghc-experimental-exports.stdout - testsuite/tests/interface-stability/ghc-experimental-exports.stdout-mingw32 - testsuite/tests/interface-stability/ghc-prim-exports.stdout - testsuite/tests/interface-stability/ghc-prim-exports.stdout-mingw32 - testsuite/tests/parser/should_compile/ListTuplePunsSuccess1.hs - testsuite/tests/parser/should_compile/all.T - + testsuite/tests/parser/should_fail/ListTuplePunsFail6.hs - + testsuite/tests/parser/should_fail/ListTuplePunsFail6.stderr - testsuite/tests/parser/should_fail/all.T - testsuite/tests/parser/should_run/ListTuplePunsConstraints.hs - testsuite/tests/profiling/should_run/callstack001.stdout - + testsuite/tests/rts/T25275/DebugIpe.hs - + testsuite/tests/rts/T25275/T25275_A.stdout - + testsuite/tests/rts/T25275/T25275_B.stdout - + testsuite/tests/rts/T25275/T25275_C.stdout - + testsuite/tests/rts/T25275/T25275_D.stdout - + testsuite/tests/rts/T25275/TraceIpe.hs - + testsuite/tests/rts/T25275/all.T - + testsuite/tests/typecheck/should_compile/T23135.hs - testsuite/tests/typecheck/should_compile/all.T The diff was not included because it is too large. View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/82f0fa78aa8fdaa4dc163e8c2febce… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/82f0fa78aa8fdaa4dc163e8c2febce… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/wenkokke/trace-ipe] 4 commits: ghc-internal: Add TraceFlags.traceIPE
by Wen Kokke (＠wenkokke) 16 May '26

16 May '26

Wen Kokke pushed to branch wip/wenkokke/trace-ipe at Glasgow Haskell Compiler / GHC Commits: 17231814 by Wen Kokke at 2026-05-16T22:43:42+01:00 ghc-internal: Add TraceFlags.traceIPE - - - - - e22afab1 by Wen Kokke at 2026-05-16T22:43:46+01:00 testsuite: Add test for TraceFlags.traceIpe - - - - - eb7312c4 by Wen Kokke at 2026-05-16T22:43:46+01:00 ghc-internal: Add DebugFlags.ipe - - - - - c0709b8b by Wen Kokke at 2026-05-16T22:43:49+01:00 testsuite: Add test for DebugFlags.ipe - - - - - 10 changed files: - libraries/ghc-internal/src/GHC/Internal/RTS/Flags.hsc - testsuite/tests/interface-stability/ghc-experimental-exports.stdout - testsuite/tests/interface-stability/ghc-experimental-exports.stdout-mingw32 - + testsuite/tests/rts/T25275/DebugIpe.hs - + testsuite/tests/rts/T25275/T25275_A.stdout - + testsuite/tests/rts/T25275/T25275_B.stdout - + testsuite/tests/rts/T25275/T25275_C.stdout - + testsuite/tests/rts/T25275/T25275_D.stdout - + testsuite/tests/rts/T25275/TraceIpe.hs - + testsuite/tests/rts/T25275/all.T Changes: ===================================== libraries/ghc-internal/src/GHC/Internal/RTS/Flags.hsc ===================================== @@ -211,6 +211,8 @@ data DebugFlags = DebugFlags , squeeze :: Bool -- ^ @z@ stack squeezing & lazy blackholing , hpc :: Bool -- ^ @c@ coverage , sparks :: Bool -- ^ @r@ + , ipe :: Bool -- ^ @I@ + -- @since ghc-experimental-10.0.0 } deriving ( Show -- ^ @since base-4.8.0.0 , Generic -- ^ @since base-4.15.0.0 ) @@ -359,6 +361,8 @@ data TraceFlags = TraceFlags , sparksSampled :: Bool -- ^ trace spark events by a sampled method , sparksFull :: Bool -- ^ trace spark events 100% accurately , user :: Bool -- ^ trace user events (emitted from Haskell code) + , traceIpe :: Bool -- ^ trace IPE events + -- @since ghc-experimental-10.0.0 } deriving ( Show -- ^ @since base-4.8.0.0 , Generic -- ^ @since base-4.15.0.0 ) @@ -588,6 +592,8 @@ getDebugFlags = do (#{peek DEBUG_FLAGS, hpc} ptr :: IO CBool)) <*> (toBool <$> (#{peek DEBUG_FLAGS, sparks} ptr :: IO CBool)) + <*> (toBool <$> + (#{peek DEBUG_FLAGS, ipe} ptr :: IO CBool)) getCCFlags :: IO CCFlags getCCFlags = do @@ -647,6 +653,8 @@ getTraceFlags = do (#{peek TRACE_FLAGS, sparks_full} ptr :: IO CBool)) <*> (toBool <$> (#{peek TRACE_FLAGS, user} ptr :: IO CBool)) + <*> (toBool <$> + (#{peek TRACE_FLAGS, ipe} ptr :: IO CBool)) #endif getTickyFlags :: IO TickyFlags ===================================== testsuite/tests/interface-stability/ghc-experimental-exports.stdout ===================================== @@ -6428,7 +6428,7 @@ module GHC.RTS.Flags.Experimental where type ConcFlags :: * data ConcFlags = ConcFlags {ctxtSwitchTime :: RtsTime, ctxtSwitchTicks :: GHC.Internal.Types.Int} type DebugFlags :: * - data DebugFlags = DebugFlags {scheduler :: GHC.Internal.Types.Bool, interpreter :: GHC.Internal.Types.Bool, weak :: GHC.Internal.Types.Bool, gccafs :: GHC.Internal.Types.Bool, gc :: GHC.Internal.Types.Bool, nonmoving_gc :: GHC.Internal.Types.Bool, block_alloc :: GHC.Internal.Types.Bool, sanity :: GHC.Internal.Types.Bool, stable :: GHC.Internal.Types.Bool, prof :: GHC.Internal.Types.Bool, linker :: GHC.Internal.Types.Bool, apply :: GHC.Internal.Types.Bool, stm :: GHC.Internal.Types.Bool, squeeze :: GHC.Internal.Types.Bool, hpc :: GHC.Internal.Types.Bool, sparks :: GHC.Internal.Types.Bool} + data DebugFlags = DebugFlags {scheduler :: GHC.Internal.Types.Bool, interpreter :: GHC.Internal.Types.Bool, weak :: GHC.Internal.Types.Bool, gccafs :: GHC.Internal.Types.Bool, gc :: GHC.Internal.Types.Bool, nonmoving_gc :: GHC.Internal.Types.Bool, block_alloc :: GHC.Internal.Types.Bool, sanity :: GHC.Internal.Types.Bool, stable :: GHC.Internal.Types.Bool, prof :: GHC.Internal.Types.Bool, linker :: GHC.Internal.Types.Bool, apply :: GHC.Internal.Types.Bool, stm :: GHC.Internal.Types.Bool, squeeze :: GHC.Internal.Types.Bool, hpc :: GHC.Internal.Types.Bool, sparks :: GHC.Internal.Types.Bool, ipe :: GHC.Internal.Types.Bool} type DoCostCentres :: * data DoCostCentres = CostCentresNone | CostCentresSummary | CostCentresVerbose | CostCentresAll | CostCentresJSON type DoHeapProfile :: * @@ -6505,7 +6505,7 @@ module GHC.RTS.Flags.Experimental where type TickyFlags :: * data TickyFlags = TickyFlags {showTickyStats :: GHC.Internal.Types.Bool, tickyFile :: GHC.Internal.Maybe.Maybe GHC.Internal.IO.FilePath} type TraceFlags :: * - data TraceFlags = TraceFlags {tracing :: DoTrace, timestamp :: GHC.Internal.Types.Bool, traceScheduler :: GHC.Internal.Types.Bool, traceGc :: GHC.Internal.Types.Bool, traceNonmovingGc :: GHC.Internal.Types.Bool, sparksSampled :: GHC.Internal.Types.Bool, sparksFull :: GHC.Internal.Types.Bool, user :: GHC.Internal.Types.Bool} + data TraceFlags = TraceFlags {tracing :: DoTrace, timestamp :: GHC.Internal.Types.Bool, traceScheduler :: GHC.Internal.Types.Bool, traceGc :: GHC.Internal.Types.Bool, traceNonmovingGc :: GHC.Internal.Types.Bool, sparksSampled :: GHC.Internal.Types.Bool, sparksFull :: GHC.Internal.Types.Bool, user :: GHC.Internal.Types.Bool, traceIpe :: GHC.Internal.Types.Bool} getCCFlags :: GHC.Internal.Types.IO CCFlags getConcFlags :: GHC.Internal.Types.IO ConcFlags getDebugFlags :: GHC.Internal.Types.IO DebugFlags ===================================== testsuite/tests/interface-stability/ghc-experimental-exports.stdout-mingw32 ===================================== @@ -6431,7 +6431,7 @@ module GHC.RTS.Flags.Experimental where type ConcFlags :: * data ConcFlags = ConcFlags {ctxtSwitchTime :: RtsTime, ctxtSwitchTicks :: GHC.Internal.Types.Int} type DebugFlags :: * - data DebugFlags = DebugFlags {scheduler :: GHC.Internal.Types.Bool, interpreter :: GHC.Internal.Types.Bool, weak :: GHC.Internal.Types.Bool, gccafs :: GHC.Internal.Types.Bool, gc :: GHC.Internal.Types.Bool, nonmoving_gc :: GHC.Internal.Types.Bool, block_alloc :: GHC.Internal.Types.Bool, sanity :: GHC.Internal.Types.Bool, stable :: GHC.Internal.Types.Bool, prof :: GHC.Internal.Types.Bool, linker :: GHC.Internal.Types.Bool, apply :: GHC.Internal.Types.Bool, stm :: GHC.Internal.Types.Bool, squeeze :: GHC.Internal.Types.Bool, hpc :: GHC.Internal.Types.Bool, sparks :: GHC.Internal.Types.Bool} + data DebugFlags = DebugFlags {scheduler :: GHC.Internal.Types.Bool, interpreter :: GHC.Internal.Types.Bool, weak :: GHC.Internal.Types.Bool, gccafs :: GHC.Internal.Types.Bool, gc :: GHC.Internal.Types.Bool, nonmoving_gc :: GHC.Internal.Types.Bool, block_alloc :: GHC.Internal.Types.Bool, sanity :: GHC.Internal.Types.Bool, stable :: GHC.Internal.Types.Bool, prof :: GHC.Internal.Types.Bool, linker :: GHC.Internal.Types.Bool, apply :: GHC.Internal.Types.Bool, stm :: GHC.Internal.Types.Bool, squeeze :: GHC.Internal.Types.Bool, hpc :: GHC.Internal.Types.Bool, sparks :: GHC.Internal.Types.Bool, ipe :: GHC.Internal.Types.Bool} type DoCostCentres :: * data DoCostCentres = CostCentresNone | CostCentresSummary | CostCentresVerbose | CostCentresAll | CostCentresJSON type DoHeapProfile :: * @@ -6508,7 +6508,7 @@ module GHC.RTS.Flags.Experimental where type TickyFlags :: * data TickyFlags = TickyFlags {showTickyStats :: GHC.Internal.Types.Bool, tickyFile :: GHC.Internal.Maybe.Maybe GHC.Internal.IO.FilePath} type TraceFlags :: * - data TraceFlags = TraceFlags {tracing :: DoTrace, timestamp :: GHC.Internal.Types.Bool, traceScheduler :: GHC.Internal.Types.Bool, traceGc :: GHC.Internal.Types.Bool, traceNonmovingGc :: GHC.Internal.Types.Bool, sparksSampled :: GHC.Internal.Types.Bool, sparksFull :: GHC.Internal.Types.Bool, user :: GHC.Internal.Types.Bool} + data TraceFlags = TraceFlags {tracing :: DoTrace, timestamp :: GHC.Internal.Types.Bool, traceScheduler :: GHC.Internal.Types.Bool, traceGc :: GHC.Internal.Types.Bool, traceNonmovingGc :: GHC.Internal.Types.Bool, sparksSampled :: GHC.Internal.Types.Bool, sparksFull :: GHC.Internal.Types.Bool, user :: GHC.Internal.Types.Bool, traceIpe :: GHC.Internal.Types.Bool} getCCFlags :: GHC.Internal.Types.IO CCFlags getConcFlags :: GHC.Internal.Types.IO ConcFlags getDebugFlags :: GHC.Internal.Types.IO DebugFlags ===================================== testsuite/tests/rts/T25275/DebugIpe.hs ===================================== @@ -0,0 +1,6 @@ +module Main where + +import GHC.RTS.Flags.Experimental (DebugFlags (..), getDebugFlags) + +main :: IO () +main = print . ipe =<< getDebugFlags ===================================== testsuite/tests/rts/T25275/T25275_A.stdout ===================================== @@ -0,0 +1 @@ +False \ No newline at end of file ===================================== testsuite/tests/rts/T25275/T25275_B.stdout ===================================== @@ -0,0 +1 @@ +True \ No newline at end of file ===================================== testsuite/tests/rts/T25275/T25275_C.stdout ===================================== @@ -0,0 +1 @@ +False \ No newline at end of file ===================================== testsuite/tests/rts/T25275/T25275_D.stdout ===================================== @@ -0,0 +1 @@ +True \ No newline at end of file ===================================== testsuite/tests/rts/T25275/TraceIpe.hs ===================================== @@ -0,0 +1,6 @@ +module Main where + +import GHC.RTS.Flags.Experimental (TraceFlags (..), getTraceFlags) + +main :: IO () +main = print . traceIpe =<< getTraceFlags ===================================== testsuite/tests/rts/T25275/all.T ===================================== @@ -0,0 +1,43 @@ +# Compile and run with default RTS options +test( + 'T25275_A', + [ + extra_files(['TraceIpe.hs']), + ], + multimod_compile_and_run, + ['TraceIpe', ''], +) + +# Compile and run with -lI +test( + 'T25275_B', + [ + extra_files(['TraceIpe.hs']), + extra_run_opts('+RTS -lI -RTS'), + ], + multimod_compile_and_run, + ['TraceIpe', ''], +) + +# Compile and run with default RTS options +test( + 'T25275_C', + [ + only_ways(['debug']), + extra_files(['DebugIpe.hs']), + ], + multimod_compile_and_run, + ['DebugIpe', ''], +) + +# Compile and run with -DI +test( + 'T25275_D', + [ + only_ways(['debug']), + extra_files(['DebugIpe.hs']), + extra_run_opts('+RTS -DI -RTS'), + ], + multimod_compile_and_run, + ['DebugIpe', ''], +) View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/91deab48fa429ff1df5939be37dd58… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/91deab48fa429ff1df5939be37dd58… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/marge_bot_batch_merge_job] 5 commits: Add type families: Tuple, Constraints, Tuple#, Sum#
by Marge Bot (＠marge-bot) 16 May '26

16 May '26

Marge Bot pushed to branch wip/marge_bot_batch_merge_job at Glasgow Haskell Compiler / GHC Commits: 7ebc6609 by Vladislav Zavialov at 2026-05-16T17:22:28-04:00 Add type families: Tuple, Constraints, Tuple#, Sum# These type families map tuples of types to the corresponding Tuple<N>, Tuple<N>#, CTuple<N>, and Sum<N># types. Some examples at N=2: Tuple (Int, Bool) = Tuple2 Int Bool Constraints (Show a, Eq a) = CTuple2 (Show a) (Eq a) Tuple# (Int#, Float#) = Tuple2# Int# Float# Sum# (Int#, Float#) = Sum2# Int# Float# See GHC Proposal #145 "Non-punning list and tuple syntax". To make the Sum# instance at N=64 possible, this patch also introduces the Sum64# constructor declaration and bumps mAX_SUM_SIZE from 63 to 64. Metric Increase: ghc_experimental_dir - - - - - eb776f25 by fendor at 2026-05-16T17:22:29-04:00 Fix regression T27202: `:load` and `:add` work in GHCi To fix the regression there are conceptually two major things that we fix: * We don't remove the `importDirs` from `interactive-session` * When `:add`ing a module, we don't try to find them via PackageImports * The PackageImport is wrong as we can't know the package-name at this stage in ghc/UI.hs What does it mean to not remove the `importDirs` from `interactive-session`? It means that, given some initial `DynFlags`, we will use those `importDirs` in `interactive-session`. The initial `DynFlags`, however, depend on how you initialise the GHC session. For a simple session, initialised by ghc -isrc -this-unit-id main It is simple, just use the `DynFlags` given on the cli. Thus, `main` and `interactive-session` will have the same `DynFlags`, except for the `homeUnitId` and `interactive-session` depends on `main` by construction of the GHCi session. What about a multiple home unit session, though? ghc -unit @unit1 -unit @unit2 What are the `DynFlags` in this cli invocation? It shouldn't be either `@unti1` nor `@unit2`, as the order shouldn't matter or any other implicit condition. For consistency, we decide that the initial `DynFlags` are the top `DynFlags` on the cli, ignoring `-unit` flags. Thus, in this example, there are no `importsDirs` regardless of what we might find in `@unit1` and `@unit2`. But in this invocation: ghc -isrc -unit @unit1 -unit @unit2 The `interactive-session` will have the `importsDirs` `src`. Note, `-isrc` will be inherited in `@unit1` and `@unit2`, so you need to explicitly use `-i` to clear the `importsDirs`, in order to avoid accidentally adding `src` as an import directory to all other home units. This fix has been made possible by the improvements introduced in !15888, which avoids ambiguity when a home unit shares the `importsDirs` with the `interactive-session`, on top of being much faster for multiple home units. Adds regression tests for T27202 for `:load`ing and `:add`ing modules that are located in import directories. - - - - - a6b610b7 by fendor at 2026-05-16T17:22:29-04:00 Use home unit package db stacks in GHCi prompt and session unit In order to import modules from home unit dependencies (e.g., `Data.Map`), the ghci prompt unit needs to populate its `UnitState`. This is tricky to handle correctly, which `PackageDBFlag`s should we use to populate the `UnitState`? We decide, the most intuitive solution for users is to depend on all `PackageDBFlag`s, so that any dependency can be imported in GHCi. This assumes consistency in the `PackageDBFlag`s, so no two home units specify `PackageDBFlag`s that are inconsistent with each other. We could simply concat all the `PackageDBFlag`s of the existing home units, but later `PackageDBFlag`s shadow earlier ones, leading to the last processed home units' `PackageDBFlag`s to shadow the earlier ones. This is hard to fix, we need to give users the capability to provide ghc options for the ghci prompt home unit. However, as this is considerably more work, we decided on an approximation that should work out most of the time. Package Db stacks in cabal and stack follow a certain structure: -no-user-package-db > -package-db $cabal-store > -package-db $local-db The first two arguments are always the same, namely the `-no-user-package-db` and `-package-db`. We compute the longest common prefix over all home units, and use that as the start of the package db stack. Then, over the rest of the `PackageDBFlag`s, we simply take the union and append them to our initial stack. We assume, that the rest of package dbs only defines very few, "local" units that are usually not shadowing each other. This allows us to get a relatively consistent package database stack for the ghci prompt home unit. Similar reasoning applies to the session unit in order to add modules to the session and have dependencies available in the module. We do something similar for `-package` flags, to make sure only the correct units are actually visible in the ghci session. This time, we simply take the union of all `PackageFlag`s, allowing us to import modules from the home unit dependencies. In the future, it would be beneficial to allow the user to provide the exact ghc options to control the visibilities. For now, this will have to do. - - - - - 1a4c2b46 by Duncan Coutts at 2026-05-16T17:22:30-04:00 Document removal of the signal-based interval timer Update mentions within the RTS section of the users guide. Add a changelog entry. - - - - - 82f0fa78 by Duncan Coutts at 2026-05-16T17:22:30-04:00 Fix section for an recent changelog entry - - - - - 93 changed files: - + changelog.d/T27202 - changelog.d/dynamic-trace-flags - + changelog.d/lib-add-tuple-tyfam-27179 - + changelog.d/no-more-timer-signal - compiler/GHC/Driver/DynFlags.hs - compiler/GHC/Settings/Constants.hs - compiler/GHC/Unit/State.hs - docs/users_guide/profiling.rst - docs/users_guide/runtime_control.rst - ghc/GHCi/UI.hs - ghc/Main.hs - libraries/base/src/GHC/Base.hs - libraries/base/src/GHC/Exts.hs - libraries/ghc-experimental/src/Data/Sum/Experimental.hs - libraries/ghc-experimental/src/Data/Tuple/Experimental.hs - libraries/ghc-internal/src/GHC/Internal/Base.hs - libraries/ghc-internal/src/GHC/Internal/Exts.hs - libraries/ghc-internal/src/GHC/Internal/Types.hs - testsuite/tests/driver/fat-iface/fat014.stdout - + testsuite/tests/ghci/prog-mhu006/Makefile - + testsuite/tests/ghci/prog-mhu006/a/A.hs - + testsuite/tests/ghci/prog-mhu006/all.T - + testsuite/tests/ghci/prog-mhu006/b/B.hs - + testsuite/tests/ghci/prog-mhu006/prog-mhu006a.script - + testsuite/tests/ghci/prog-mhu006/prog-mhu006a.stdout - + testsuite/tests/ghci/prog-mhu006/unitA - + testsuite/tests/ghci/prog-mhu006/unitB - testsuite/tests/ghci/prog018/prog018.stdout - testsuite/tests/ghci/prog020/Makefile - testsuite/tests/ghci/prog020/all.T - testsuite/tests/ghci/prog020/ghci.prog020.script → testsuite/tests/ghci/prog020/ghci.prog020a.script - testsuite/tests/ghci/prog020/ghci.prog020.stderr → testsuite/tests/ghci/prog020/ghci.prog020a.stderr - testsuite/tests/ghci/prog020/ghci.prog020.stdout → testsuite/tests/ghci/prog020/ghci.prog020a.stdout - + testsuite/tests/ghci/prog020/ghci.prog020b.script - + testsuite/tests/ghci/prog020/ghci.prog020b.stderr - + testsuite/tests/ghci/prog020/ghci.prog020b.stdout - + testsuite/tests/ghci/prog023/Makefile - + testsuite/tests/ghci/prog023/all.T - + testsuite/tests/ghci/prog023/prog023a.script - + testsuite/tests/ghci/prog023/prog023a.stdout - + testsuite/tests/ghci/prog023/prog023b.script - + testsuite/tests/ghci/prog023/prog023b.stdout - + testsuite/tests/ghci/prog023/src/A.hs - + testsuite/tests/ghci/prog024/Makefile - + testsuite/tests/ghci/prog024/all.T - + testsuite/tests/ghci/prog024/prog024a.script - + testsuite/tests/ghci/prog024/prog024a.stdout - + testsuite/tests/ghci/prog024/prog024b.script - + testsuite/tests/ghci/prog024/prog024b.stdout - + testsuite/tests/ghci/prog024/prog024c.script - + testsuite/tests/ghci/prog024/prog024c.stderr - + testsuite/tests/ghci/prog024/prog024c.stdout - + testsuite/tests/ghci/prog024/prog024d.script - + testsuite/tests/ghci/prog024/prog024d.stderr - + testsuite/tests/ghci/prog024/prog024d.stdout - + testsuite/tests/ghci/prog024/prog024e.script - + testsuite/tests/ghci/prog024/prog024e.stdout - + testsuite/tests/ghci/prog024/prog024f.script - + testsuite/tests/ghci/prog024/prog024f.stdout - + testsuite/tests/ghci/prog024/src/A.hs - + testsuite/tests/ghci/prog024/src/B.hs - + testsuite/tests/ghci/prog025/Makefile - + testsuite/tests/ghci/prog025/a/A.hs - + testsuite/tests/ghci/prog025/all.T - + testsuite/tests/ghci/prog025/prog025a.script - + testsuite/tests/ghci/prog025/prog025a.stdout - + testsuite/tests/ghci/prog025/prog025b.script - + testsuite/tests/ghci/prog025/prog025b.stdout - + testsuite/tests/ghci/prog025/testpkg/Test.hs - + testsuite/tests/ghci/prog025/testpkg/testpkg-0.1.0.0.pkg - + testsuite/tests/ghci/prog025/testpkg/testpkg-0.2.0.0.pkg - + testsuite/tests/ghci/prog025/unitA - testsuite/tests/ghci/scripts/ListTuplePunsPprNoAbbrevTuple.stdout - testsuite/tests/ghci/scripts/T13997.stdout - testsuite/tests/ghci/scripts/T1914.stdout - testsuite/tests/ghci/scripts/T20217.stdout - testsuite/tests/ghci/scripts/T8042.stdout - testsuite/tests/ghci/scripts/T8042recomp.stdout - testsuite/tests/ghci/scripts/all.T - testsuite/tests/ghci/should_run/T10920.stderr - testsuite/tests/interface-stability/ghc-experimental-exports.stdout - testsuite/tests/interface-stability/ghc-experimental-exports.stdout-mingw32 - testsuite/tests/interface-stability/ghc-prim-exports.stdout - testsuite/tests/interface-stability/ghc-prim-exports.stdout-mingw32 - testsuite/tests/parser/should_compile/ListTuplePunsSuccess1.hs - testsuite/tests/parser/should_compile/all.T - + testsuite/tests/parser/should_fail/ListTuplePunsFail6.hs - + testsuite/tests/parser/should_fail/ListTuplePunsFail6.stderr - testsuite/tests/parser/should_fail/all.T - testsuite/tests/parser/should_run/ListTuplePunsConstraints.hs - testsuite/tests/profiling/should_run/callstack001.stdout - + testsuite/tests/typecheck/should_compile/T23135.hs - testsuite/tests/typecheck/should_compile/all.T The diff was not included because it is too large. View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/50e672706a93206b22f3713bc06ef8… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/50e672706a93206b22f3713bc06ef8… You're receiving this email because of your account on gitlab.haskell.org.

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